I just wrapped up my first season of AutoX running my '06 WRX Wagon in STU. I wasn't that competitive, but wasn't expecting to be due to my noobness. How did all of you '06ers running in STU do this year? Just wondering, since the car seems to be up against some stiff competition (EVO, STI to name a few)...

I'd also be interested in hearing general thoughts on the competition and how the '06 stacks up...

I think the WRX TRs may have a chance. The 2006MY STI weighs 3351lbs, while the WRX TR weighs 3192lbs (the WRX Limited weighs 3239lbs). Considering the WRX TR weighs about 160lbs lighter than the STI, it may have a chance in the transitional turns. However, at the exit acceleration of the turns forget it; the STI has 3 LSDs and better power and a 6 speed ratio gearbox.

I don't have hard evidence either but, I would like to add. The 5 speed could prove an advantage on fast courses requiring use of both second and third for STis. The WRX also has peak TQ at a lower RPM. I don't think it ever stands a chance, but it has a couple of advantages coupled with a ton of severe disadvantages. Go play in ESP, but don't get us bumped to BSP kthx:lol:

I think the WRX TRs may have a chance. The 2006MY STI weighs 3351lbs, while the WRX TR weighs 3192lbs (the WRX Limited weighs 3239lbs). Considering the WRX TR weighs about 160lbs lighter than the STI, it may have a chance in the transitional turns. However, at the exit acceleration of the turns forget it; the STI has 3 LSDs and better power and a 6 speed ratio gearbox.
FYI, the regular WRX with fog lights, auto HVAC, etc. weighs 3192lbs. SOA never posted an official weight for the TR. However, Motortrend magazine recently did... ;)

http://www.freewebtown.com/thejaredhuang/mtwrxms3.jpg
http://www.freewebtown.com/thejaredhuang/mtwrxms3-2.jpg

3,140lbs!!! :cool:

FYI, the regular WRX with fog lights, auto HVAC, etc. weighs 3192lbs. SOA never posted an official weight for the TR. However, Motortrend magazine recently did... ;)

3,140lbs!!! :cool:

I saw that mag. Unfortunately, I wasn't sure if that was a typo or not since the Mazdaspeed 3 also weighs 3140lbs. Thus I used cars101.com for the source. I can't think of a reason the WRX TR is lighter than the WRX except for the seats. I don't think the weight difference between the seats are 25 lbs, which would make up the greater than 50lb difference.

I saw that mag. Unfortunately, I wasn't sure if that was a typo or not since the Mazdaspeed 3 also weighs 3140lbs. Thus I used cars101.com for the source.
I didn't think Joe Spitz weighed each model - he would just use the info Subaru lists (notice the regular WRX sedan and TR have the same weight). According to Subaru's media site, the weight for the TR is 'N/A'.

http://vocuspr.vocus.com/vocuspr30/Temp/Sites/1571/5ba5b39695e64a66bc91a7fa2524e3ab/7._06_Impreza_WRX_Specs2.pdf

I didn't think Joe Spitz weighed each model - he would just use the info Subaru lists - and according to Subaru's media site, the weight for the TR is 'N/A'.

So what would account for the 50lb difference between the WRX TR and the WRX if MotorTrend did not have a misprint?

Stereo? Probably 10 pounds could be found there.... and I doubt if the seats weigh any different.

Stereo? Probably 10 pounds could be found there.... and I doubt if the seats weigh any different.

Meh, considering communication is fast today, I just shot MotorTrend an e-mail.

Stereo? Probably 10 pounds could be found there.... and I doubt if the seats weigh any different.
<Stereo> TR just has an 80 watt 4 speaker sound system with a single disc cd player - WRX has a 6 disc in-dash cd changer with a 140 watt 6 speaker sound system.
<Fog Lights> TR has STI covers, WRX has two fog lamps and the necessary wiring, switches, etc.
<Climate Control> TR has manual system, while WRX has an auto climate system requiring a control module to regulate everything.

Painted mirrors on the WRX will be neglible and like you mentioned, I doubt there's any difference in seat weight. The wing is technically an option on both cars.

FWIW I weighed mine in street trim with about a half a tank of gas at 3120.

Damn double post!

FWIW I weighed mine in street trim with about a half a tank of gas at 3120.
That's about right since we have ~16 gal gas tanks. 8 gal gas = ~60lbs.

P.S. When you weighed it, were you on those lightweight wheels? That could account for the missing 12lbs.

Meh, considering communication is fast today, I just shot MotorTrend an e-mail.
That's awesome. I'd be interested in knowing the exact weight they got for each car. I know that when Motortrend test cars, they ensure they have a full tank of gas and are set to maufacturers recommended specs (tire pressures, etc.)

This was my first season of autoxing and I began it with a brand new bone stock 06 TR properly broken in. As the season progressed, I added mods here and there, trying to keep it balance between power and handling. After a year of events, Along with improved driving skills,and a host of basic mods, I've find myself consistently in mid pack amongst a pack STIs and LGTs.

Meh, considering communication is fast today, I just shot MotorTrend an e-mail.

:lol: I'm just amused that you think MotorTrend even actually drove the cars they review much less weighed them.

:lol: I'm just amused that you think MotorTrend even actually drove the cars they review much less weighed them.

That's awesome. I'd be interested in knowing the exact weight they got for each car. I know that when Motortrend test cars, they ensure they have a full tank of gas and are set to maufacturers recommended specs (tire pressures, etc.)

PhilC: Conflicting reports, eh buddy?

PhilC: Conflicting reports, eh buddy?
I've subscribed to Motortrend for years, and used to watch Motortrend TV when it was on the air. They're anal about that stuff. :p

It will stack up this way...go back to DS or move up to ESP (with ALL mods available and legal) and you'll have a better shot at winning. I'm not usually that blunt but I figured I'd save you some frustration. That said, feel free to prove me wrong.

What will win? See my signature.

Dave Mac
06 Evo RS

It will stack up this way...go back to DS or move up to ESP (with ALL mods available and legal) and you'll have a better shot at winning. I'm not usually that blunt but I figured I'd save you some frustration. That said, feel free to prove me wrong.

What will win? See my signature.

Dave Mac
06 Evo RS

:lol: :lol: Great joke! Considering STIs have won the STU category for the past 2 years at Nationals. In all due fairness though, I wonder if there has been serious efforts by an Evo driver.

The service manual lists three Curb Weights for the 2006 WRX 5MT Sedan:
3192 (base model)
3234 +sunroof
3239 +sunroof, +rear spoiler, +ColdWeather package, +leather seats

No reference to the "TR" package which should lose some weight off these specs.

It will stack up this way...go back to DS or move up to ESP (with ALL mods available and legal) and you'll have a better shot at winning. I'm not usually that blunt but I figured I'd save you some frustration. That said, feel free to prove me wrong.

What will win? See my signature.

Dave Mac
06 Evo RS

I'm not frustrated at all, just curious to see how some people have done.

Between you, Corey, and Andrew all potentially running Evo's in STU next year, the Subaru's will certainly have their work cut out for them.

It will stack up this way...go back to DS or move up to ESP (with ALL mods available and legal) and you'll have a better shot at winning. I'm not usually that blunt but I figured I'd save you some frustration. That said, feel free to prove me wrong.

What will win? See my signature.

Dave Mac
06 Evo RS
Dave,

I'd have to disagree. The '06 WRX can run almost any coilover suspension that an STI driver can use. Branden Burkhart mentioned he makes ~304whp on his STU legal race gas ECU map. I'm sure '06 WRX owners could make ~250whp and almost an identical amount of torque (as a VF39 STI) on a good race gas STU legal map.

The WRX will have to make fewer shifts, and have a good 200+lb advantage over an STI driver. And being down 50+whp means diddly on an autoX circuit, as some cars make less than 200whp and are still up there in the trophies (Mike Neary's '95 M3 makes 195 rwhp).
:lol: :lol: Great joke! Considering STIs have won the STU category for the past 2 years at Nationals. In all due fairness though, I wonder if there has been serious efforts by an Evo driver.
The STI's success means diddly IMHO. The same driver won both times - Burkhart. If he'd been in an Evo the last two seasons, guess what? No STIs would have won... ;)
No reference to the "TR" package which should lose some weight off these specs.
Agreed. The difference in Stereo, Climate Control and Fog Lights should definitely make the TR at least 40+lbs lighter than a regular WRX.

I'm sure '06 WRX owners could make ~250whp and almost an identical amount of torque (as a VF39 STI) on a good race gas STU legal map.
.

Not really sure what that means...

And identical amount of torque, at an identical RPM equals an identical amount of HP.

The only think you seem to be saying is that the peak torque of the WRX could be the same as the peak torque of the STi. That really doens't say much, only that at some random point (different in both powerbands) the cars will make the same horsepower.

Why do we differentiate between torque and HP? If a car has more low end torque, it has more low end power. If it has more low end power, it has more low end torque.

Seems more appropriate to jsut say they have nearly identical midrange power.

CN: why when the tach falls below 5k do we call power torque, and vice versa???

Sorry...bored at work...

It is sad to see all of the Suby pioneers, at least in the Philly region, move on....they will be missed.

Not really sure what that means...



It is sad to see all of the Suby pioneers, at least in the Philly region, move on....they will be missed.


Right now its looking like the only STU STi's in the Philly region next year will be Mr. Small's and myself!

Not really sure what that means...

And identical amount of torque, at an identical RPM equals an identical amount of HP.

The only think you seem to be saying is that the peak torque of the WRX could be the same as the peak torque of the STi. That really doens't say much, only that at some random point (different in both powerbands) the cars will make the same horsepower.

Why do we differentiate between torque and HP? If a car has more low end torque, it has more low end power. If it has more low end power, it has more low end torque.

Seems more appropriate to jsut say they have nearly identical midrange power.

CN: why when the tach falls below 5k do we call power torque, and vice versa???

Sorry...bored at work...

It is sad to see all of the Suby pioneers, at least in the Philly region, move on....they will be missed.
Good observation. I was getting a little lazy in my explanation. You're right, for torque to be identical, hp would have to be identical as well. I was referring to peak torque.

There have been a few stock turbo race gas dyno maps I've seen where '06 WRXs are making close to 300wtq. This was obviously at elevated boost levels, but it'll be interesting to see what dyno numbers can be generated on a good STU legal race gas map for the '06 WRX. :)

Chike

P.S. It's definitely sad to see so many talented Suby STU drivers drivers move on from the Philly area... :(

The STI's success means diddly IMHO. The same driver won both times - Burkhart. If he'd been in an Evo the last two seasons, guess what? No STIs would have won... ;)

Hence why I said I've wondered if the Evo people have been serious, as in putting a great driver behind a great car. I'm actually more surprised that the Evos haven't beaten the STIs yet. I think the Evos have a slight edge over the STI in handling because of the standard spherical ball bearing set-up not to mention the rear is a multi-link suspension geometry, which has better camber curves than the STIs strut setup.

The curb weight of the 2006 WRX TR model is 3,192 lbs. If you have any other questions, do not hesitate to reply to this email!

Best wishes,

Samir Hasan
Subaru of America, Inc.
Customer/Dealer Services Department

I wonder if he just couldn't find the spec or actually has a WRX TR weight spec in front of him. I'd like to see what MotorTrend says.

The service manual lists three Curb Weights for the 2006 WRX 5MT Sedan:
3192 (base model)
3234 +sunroof
3239 +sunroof, +rear spoiler, +ColdWeather package, +leather seats

No reference to the "TR" package which should lose some weight off these specs.

If that sub-1.5% difference in curb weight has any effect on your autocross times, you're either an autocross god, or making up excuses for your lousy driving. (not you, nhluhr.. just whoever might be pointing fingers at the weight)

Right now its looking like the only STU STi's in the Philly region next year will be Mr. Small's and myself!

You know you want a co-driver :)

If that sub-1.5% difference in curb weight has any effect on your autocross times, you're either an autocross god, or making up excuses for your lousy driving. (not you, nhluhr.. just whoever might be pointing fingers at the weight)

Read the thread, the issue is WRX TR vs. STI, not TR vs. Limited. Reading comprehension owns you. 150 to 200lbs is a lot.

not you, nhluhr.. i know it can't be me - I don't autocross :lol:

Read the thread, the issue is WRX TR vs. STI, not TR vs. Limited. Reading comprehension owns you. 150 to 200lbs is a lot.
My point was.. the difference in the WRX TR vs. Limited is trivial. The question was brought up.. so I don't believe it is my comprehension that's lacking.

My point was.. the difference in the WRX TR vs. Limited is trivial. The question was brought up.. so I don't believe it is my comprehension that's lacking.

This is the last I'm posting about this topic on this thread, but there is no question about the WRX Limited's weight.

You know you want a co-driver :)

Werent you looking for an 06 STi??:cool:

The WRX's main issue is that mushy center diff and the slower-than-a-school-bus steering. I have no doubt that it'll make good power Chike, that's not the issue. The handling (STi and WRX) compared to the Evo is not even close in stock form. I suppose much of my prejudice has to do with driving a car that I could not fix to handle better because I didn't own it. Don't let me discourage you. Go for it. I'd love to see what a fully prepped 06+WRX could do. It's going to take a lot of pioneering work and funds to get it done in 07.

Burkhart won because #1 he's a good driver and #2 has extensive local knowledge of the surface. There were no fully prepped2006+ Evo's at nationals in STU. Silencer has an 03 Evo with Motons and crazy spring rates to help battle the rear tire lift gremlins. The 06 Evo has no such issue when the wheel lifts, the front diff just takes over.

I'll hop into a Subie again in 2007 for an event or two just to see how they are developing. In my opinion I think the 06 STi is far-and-away better than the 05. I'd like to see Corey Wolfe develop his more.

Dave Mac
(musta been in a "mood" last night while posting)

The WRX's main issue is that mushy center diff and the slower-than-a-school-bus steering. I have no doubt that it'll make good power Chike, that's not the issue. The handling (STi and WRX) compared to the Evo is not even close in stock form. I suppose much of my prejudice has to do with driving a car that I could not fix to handle better because I didn't own it. Like I said; prove me wrong, my ego can handle it.

Dave Mac
(musta been in a "mood" last night while posting)

I thought pre-2005MY Evos (before they got ACD) also used 4kgm viscous-coupling center differentials just like the WRX and non-DCCD STIs? The biggest issue I see with the 2006 WRX is no front differential and a weak rear differential. The suspension and brakes can be replaced.

Good points Impreza01. The Evo still seemed to handle the power distribution better than the WRX did though. Strange.

The WRX's main issue is that mushy center diff and the slower-than-a-school-bus steering. I have no doubt that it'll make good power Chike, that's not the issue. The handling (STi and WRX) compared to the Evo is not even close in stock form. I suppose much of my prejudice has to do with driving a car that I could not fix to handle better because I didn't own it. Don't let me discourage you. Go for it. I'd love to see what a fully prepped 06+WRX could do. It's going to take a lot of pioneering work and funds to get it done in 07.
Dave,

If I remember correctly, you drove a minimally prepped '06 WRX in STU at the Subaru Challenge back in September. I'll admit the WRX's viscous coupling center diff isn't the greatest, but the steering ratio was improved greatly on the '06 WRX and it has 2.7 turns-to-lock (compared to the 3.0 turns-to-lock of the '02-'05 WRXs).

Maybe the bushings in the STI steering rack are stiffer than the WRXs, giving it a better feel, but I've always preferred the open-diff steering feel of my '06 WRX compared to the somewhat inconsistent steering feedback in '05+ STI's that have the limited-slip front diff... :alien:

Chike

P.S. I'm not planning to switch to STU. Won't have the funds to develop a truly competitive car. I'll be in DS for at least two more seasons. Won't be doing anything nationally in '07 as I have a 2nd baby on the way, but '08 should be a good year! The plan is to trophy in the Pro Solo Finale in '08 and just see how the cards fall at Solo Nationals... ;)

Good points Impreza01. The Evo still seemed to handle the power distribution better than the WRX did though. Strange.

Clutch rear LSD >> Viscous LSD :( Plus, I believe the multilink rear suspension with pillowball joints is a much better tarmac application than the Imprezas' strut rear suspension with metal-sleeved rubber bushings. The better suspension allows for a better tire contact patch, which is why a 2003/04MY STU Evo puts power down better than a STU 2006MY WRX. There's also the possibility the WRX wasn't well-sorted suspension setting wise.

This is the last I'm posting about this topic on this thread, but there is no question about the WRX Limited's weight.

Yeah, OK.. whether you intended to or not, you start the alternate topic by stating, "I think the WRX TRs may have a chance." My comment was simply a summary of the data brought up discussion that you had already had, I was just responding to your earlier comment that the TRs alone had a chance. But I'm waayy off base, apparently by pointing out that the weight difference between the TRs and Ltds is negligible.:rolleyes: I'm glad you're done posting about that topic, since I wasn't exactly asking for your evaluation on the level of comprehension in the first place.

Yeah, OK.. whether you intended to or not, you start the alternate topic by stating, "I think the WRX TRs may have a chance." My comment was simply a summary of the data brought up discussion that you had already had, I was just responding to your earlier comment that the TRs alone had a chance. But I'm waayy off base, apparently by pointing out that the weight difference between the TRs and Ltds is negligible.:rolleyes: I'm glad you're done posting about that topic, since I wasn't exactly asking for your evaluation on the level of comprehension in the first place.

http://www.okpatents.com/phosita/images/einstein.jpg So there! :lol:

Chike-

It was an STi, Dave Carey's STi.

I still think the WRX's best chance is in DS or ESP. ESP would allow you to fix the diffs front rear and center. Drop in a cusco 35/65 center and quaife front and rear with 300+hp:eek: . I wish I had the $ to build an Evo AND an STi for the class, that would be fun to do! I'd like to see a well prepped 06+WRX for STU, maybe it will become a force to be reconed with?

I think with a set of Koni's or Ohlins and some Hoosiers the 06+WRX will take down all the ITR's and a few Bimmers (not all) locally. If anyone has a car prepped and needs a driver to prove it I'll do a couple of events in the car. I haven't kicked some ITR butt in a WRX in a couple of years and it's about time to do it again.:devil:

Dave Mac

Dave,

If I remember correctly, you drove a minimally prepped '06 WRX in STU at the Subaru Challenge back in September. I'll admit the WRX's viscous coupling center diff isn't the greatest, but the steering ratio was improved greatly on the '06 WRX and it has 2.7 turns-to-lock (compared to the 3.0 turns-to-lock of the '02-'05 WRXs).

Maybe the bushings in the STI steering rack are stiffer than the WRXs, giving it a better feel, but I've always preferred the open-diff steering feel of my '06 WRX compared to the somewhat inconsistent steering feedback in '05+ STI's that have the limited-slip front diff... :alien:

Chike

P.S. I'm not planning to switch to STU. Won't have the funds to develop a truly competitive car. I'll be in DS for at least two more seasons. Won't be doing anything nationally in '07 as I have a 2nd baby on the way, but '08 should be a good year! The plan is to trophy in the Pro Solo Finale in '08 and just see how the cards fall at Solo Nationals... ;)

So there! :lol:I concede. :o :)

Chike-

It was an STi, Dave Carey's STi.

I still think the WRX's best chance is in DS or ESP. ESP would allow you to fix the diffs front rear and center. Drop in a cusco 35/65 center and quaife front and rear with 300+hp:eek: . I wish I had the $ to build an Evo AND an STi for the class, that would be fun to do! I'd like to see a well prepped 06+WRX for STU, maybe it will become a force to be reconed with?

I think with a set of Koni's or Ohlins and some Hoosiers the 06+WRX will take down all the ITR's and a few Bimmers (not all) locally. If anyone has a car prepped and needs a driver to prove it I'll do a couple of events in the car. I haven't kicked some ITR butt in a WRX in a couple of years and it's about time to do it again.:devil:

Dave Mac
Dave,

I didn't realize it was an STi... :o

With some Konis, Hoosiers, a Whiteline 29mm FSB and a good autocross alignment, I definitely feel the WRX can be very competitive in DS - not just locally. Hard to say about ESP, but with a large enough wallet, I can also see a good driver being competitive in that class with one...

Can a 2.5L WRX play in STU? Time will tell - but it will require some serious funds and development.

Chike

While I'm running my 06WRX in D-Stock currently, I feel its greatest chance is in ESP. Greater than stage 2 power (as you can change the intercooler, do water injection, modify the intake manifold, etc.), diffs can be swapped, fenders can be cut and/or flared to fit big sticky tires. By the time you are done, you aren't all *that* far off the BSP STI (though you are still slower), but get to play several classes lower and harass the pony cars instead. :lol:

...or possibly as good, start with an 05 non-limited LGT (3300 lbs stock curb weight) which can make even more power than the WRX in ESP trim (better heads and bigger turbo) and can use the 6-speed via UD/BD from the Spec B! :D

Back on topic, though...STU is a much tougher class with the EVOs, M3s, RX8s and STIs all playing there as well.

I concede. :o :)

:alien: :p

Is there anyone who will seriously campaign a 2006+ WRX for STU?

I saw that mag. Unfortunately, I wasn't sure if that was a typo or not since the Mazdaspeed 3 also weighs 3140lbs. Thus I used cars101.com for the source. I can't think of a reason the WRX TR is lighter than the WRX except for the seats. I don't think the weight difference between the seats are 25 lbs, which would make up the greater than 50lb difference.
FYI, in a recent comparo by Edmunds, they recorded the weight of the WRX TR as 3,122lbs:

http://www.edmunds.com/insideline/do/Drives/Comparos/articleId=117762/pageId=106162

Full article can be read here: http://www.edmunds.com/insideline/do/Drives/Comparos/articleId=117762
Along the right side of the main article it is noted under a pic of the Civic Si that: As-tested weights on all cars were measured at the track.

http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com//media/roadtests/comparison/2006/sport.compact/scc.1.500.jpg

P.S. The Solo Chairman for my SCCA region just these corner scales for Xmas:

http://www.longacreracing.com/images/products/scales/72594.jpg

Sometime over the winter I'll be going to his place to measure the weight of my WRX TR in autoX trim - 1/4 tank of gas with no mats or spare.

FYI, in a recent comparo by Edmunds, they recorded the weight of the WRX TR as 3,122lbs:

http://www.edmunds.com/insideline/do/Drives/Comparos/articleId=117762/pageId=106162

Full article can be read here: http://www.edmunds.com/insideline/do/Drives/Comparos/articleId=117762
Along the right side of the main article it is noted under a pic of the Civic Si that:

http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com//media/roadtests/comparison/2006/sport.compact/scc.1.500.jpg

P.S. The Solo Chairman for my SCCA region just these corner scales for Xmas:

http://www.longacreracing.com/images/products/scales/72594.jpg

Sometime over the winter I'll be going to his place to measure the weight of my WRX TR in autoX trim - 1/4 tank of gas with no mats or spare.

Cool! Do you mind doing the weighing both weighs, autoX trim and street trim (mats, spare and full tank of gas)?

Cool! Do you mind doing the weighing both weighs, autoX trim and street trim (mats, spare and full tank of gas)?
I can add the mats and spare, but if I'm at his house with a 1/4 tank of gas I'd hate to drive off to fill up and then go back to weigh my car again. :p

I'll see what happens, he's going to bring the scales to a test & tune event at the start of our '07 season.

You could just weigh it with a full tank. It's easy enough to calculate how light it would be at an arbitrary amount of gas since we know how much gas weighs per pound, but it's harder to know how full/empty the car is unless it's full (unless you get gas immediately after the weigh-in and see how much you can put in).

john
-t minus 3 months til the car hits the scales!

^^
Good point John. I'll see what happens when I weigh my car. I should get some #'s in ~1-2 months.

(copied from the '06 WRX D-Stock thread)

As Promised, I went to my Solo Chairman's house this afternoon to weigh my '06 WRX TR on the corner scales he recently purchased from C-DOC. After receiving them in the mail, he sent them out to a specialist to have them calibrated within 1/10th of a lb. His 2001 Corvette Z06 weighs 3,150lbs exactly on these scales with a full tank of gas.

He built a ramp system out of wood for the scales, and after adjusting it for my car's wheelbase and width, I drove her into place.

We then measured my car's weight w/o driver and w/ driver. My car had an indicated 1/3 tank of gas which I confirmed later by driving to a Shell Gas Station immediately after leaving his house and filling up with 10.13 gallons of gas - so 5.8 gals were in my car at the time of the weigh in (15.9 gal tank). I also performed the required SCCA weight reduction and removed my spare tire and all-season rubber mats.

Results were as follows:

w/o Driver

LF 919lbs RF 932lbs
LR 636lbs RR 569lbs

Total weight: 3,056lbs (Front 61%, Rear 39%)
Left-side: 1,555lbs; Right-side: 1,501lbs (Left 50.9%, Right 49.1%)


w/ Driver (170lb driver w/ seat-belt on AND both of my hands on steering wheel)

LF 990lbs RF 951lbs
LR 691lbs RR 594lbs

Total weight: 3,226lbs (Front 60%, Rear 40%)
Left-side: 1,681lbs; Right-side: 1,545lbs (Left 52.1%, Right 47.9%)

These measurements were done on my factory wheels with 225/45/17 RE070 tires. My racing 17x7 SPT wheels with 225/45/17 Victoracers will be roughly 8lbs lighter per corner.

A few pics:
http://i32.photobucket.com/albums/d14/Chiketkd/2006%20Subaru%20WRX%20TR/Corner%20Scales%20Weigh-in/02WRXdriverssidefront.jpg

http://i32.photobucket.com/albums/d14/Chiketkd/2006%20Subaru%20WRX%20TR/Corner%20Scales%20Weigh-in/01WRXdriverssiderear.jpg

http://i32.photobucket.com/albums/d14/Chiketkd/2006%20Subaru%20WRX%20TR/Corner%20Scales%20Weigh-in/03WRXunderside.jpg

Needless to say, I'm extremely happy with these results as my racing weight (with racing wheels & tires) will be over 30lbs lighter i.e. 3,025lbs w/o driver and 3,195lbs w/ driver.

Chike

P.S. Justin (alltracin) wasn't able to make it but mentioned he weighed his regular '06 WRX at 3,220lbs w/o driver, ~1/2 tank of gas and spare tire & mats in the car.

Pretty good thread, and i'm chiming in rather late as usual. I weighed my car at nats this year, and with ~1/4 tank of gas, and w/o driver the car weighed 3149. I thought that was pretty good myself. I weighed 235 at nats, although i've lost about 20lbs so far in the goal to lose as close to 50lbs by september along with any other weight reduction I can do on the car. I really would like to get the car under 3K lbs, which i'm sure that if I can do it, it'll be like 2999lbs or something like that.

That being said, the evo is a good car, I think when it comes to autocross there are some crutches to it (which are and have been addressed). The first being the turbo lag that pretty much all the older EVO's have issues with. The Ru's act like n/a cars just because when you're in the powerband at all, there isn't any turbo lag that you can discern.

Second, STi's have to shift a LOT. We only get 53mph in 2nd. At nationals I only had to shift into 3rd twice on Tuesday, and 5 times on Wednesday. Shifts are .3 seconds on the fast drivers. Downshifts are pretty much negligable for the most part because I only do them in braking zones where there's no gap in accelleration because i'm under braking. Jerry was kicking ass on Wednesdays course, however that was a longer course, and it did require more shifting. Now since Jake's EVO IX (Jerry's the co-driver) can rev higher, and has a better gear ratio, he didn't have to shift into 3rd, at all (I think). Advantage (big one) for the EVO there. If Nationals next year is all courses that long, i'll be in trouble, so i'll take the tighter courses thank you very much! LOL. I'm hoping that I come next year with a fully prepped car for '07. I'd like to see what I can do in it.

Branden

Yea shifting is def a problem with the STi's. Im interested to see how the new 07's second gear will help this problem.

Pretty good thread, and i'm chiming in rather late as usual. I weighed my car at nats this year, and with ~1/4 tank of gas, and w/o driver the car weighed 3149. I thought that was pretty good myself. I weighed 235 at nats, although i've lost about 20lbs so far in the goal to lose as close to 50lbs by september along with any other weight reduction I can do on the car. I really would like to get the car under 3K lbs, which i'm sure that if I can do it, it'll be like 2999lbs or something like that.

That being said, the evo is a good car, I think when it comes to autocross there are some crutches to it (which are and have been addressed). The first being the turbo lag that pretty much all the older EVO's have issues with. The Ru's act like n/a cars just because when you're in the powerband at all, there isn't any turbo lag that you can discern.

Second, STi's have to shift a LOT. We only get 53mph in 2nd. At nationals I only had to shift into 3rd twice on Tuesday, and 5 times on Wednesday. Shifts are .3 seconds on the fast drivers. Downshifts are pretty much negligable for the most part because I only do them in braking zones where there's no gap in accelleration because i'm under braking. Jerry was kicking ass on Wednesdays course, however that was a longer course, and it did require more shifting. Now since Jake's EVO IX (Jerry's the co-driver) can rev higher, and has a better gear ratio, he didn't have to shift into 3rd, at all (I think). Advantage (big one) for the EVO there. If Nationals next year is all courses that long, i'll be in trouble, so i'll take the tighter courses thank you very much! LOL. I'm hoping that I come next year with a fully prepped car for '07. I'd like to see what I can do in it.

Branden

I am running taller tires and am going to raise the rev limiter to 7500. Should help with the 53 mph in 2nd problem, I'll try to figure out how much.

I'm bringing back this thread since it is supposed to be a sticky.

2006-07 WRX guys in STU, what tires/wheels are you running? I'm trying to see if I can cram 245s on 17x8+ in there without rolling fenders. Research has said - maybe.

245-40-17 should fit on the correct offset 17x8's

They fit a lot better on 17x9 wheels

They fit a lot better on 17x9 wheels
+1

Btw mla163, if your car description is correct, you cannot be Cobb Stage 2 and run in STU. The raised boost would put you in ESP.

They fit a lot better on 17x9 wheels

I know, I'm not sure 17x9s will fit without rolling fenders. And a lightweight 17x9 is hard to find in 5x100.

+1

Btw mla163, if your car description is correct, you cannot be Cobb Stage 2 and run in STU. The raised boost would put you in ESP.

I know, an STU protune is needed

I know, I'm not sure 17x9s will fit without rolling fenders. And a lightweight 17x9 is hard to find in 5x100.

Those new Rota DPT's are respectable at ~18lbs a piece and only cost 850 for a set. But you need camber adjustment and some fender rolling to fit them in the rear.

Ok. I ran STU in 2007 with a MY07 WRX (Not TR, Not Limited). I had 17x8 +48 on 245/45 Azenis. The tires were not even close fitting, and I had to buy a fender roller. I had quite a few mods invested, pretty well built for stu. I won the class in 2007. In 2008, I bought a 2006 STi and raced that bone stock on re70s for the first half of the season. I was so much faster in the stock STi than the prepped WRX, it was mind boggling. I would place around 75 out of 180ish in the WRX. In the stock STi, I was placing solidly in the top 40. Now I have modded the STi pretty well (Not as well as the WRX) and I'm doing even better. I won STU in 2008 with much better competition. From experience, the WRX is not suited for STU as it is for STX, but with a really good driver, it is possible to be competitive. If you have any other questions, feel free to PM me.

Ok. I ran STU in 2007 with a MY07 WRX (Not TR, Not Limited). I had 17x8 +48 on 245/45 Azenis. The tires were not even close fitting, and I had to buy a fender roller. I had quite a few mods invested, pretty well built for stu. I won the class in 2007. In 2008, I bought a 2006 STi and raced that bone stock on re70s for the first half of the season. I was so much faster in the stock STi than the prepped WRX, it was mind boggling. I would place around 75 out of 180ish in the WRX. In the stock STi, I was placing solidly in the top 40. Now I have modded the STi pretty well (Not as well as the WRX) and I'm doing even better. I won STU in 2008 with much better competition. From experience, the WRX is not suited for STU as it is for STX, but with a really good driver, it is possible to be competitive. If you have any other questions, feel free to PM me.

This is the good info that I was looking for, thanks. I may PM you.

'08 STU Novice class champion... undefeated for events i entered... of course... i had very few competitors... none consistent... so i guess i'm the best of the worst. moving to ESP in our local street tire class this season.

Excellent thread ........ I am jumping to STU this year since the rules now allow it ....... perhaps I will see some of you out there. :devil:

Ricky T
BMW 135i
STU #15

To bump this up.

I'm close to finishing up my 07 wrx for STU. I made a late decision and decided DS wasn't fun. I will be getting a pro tune done by Jorge(P&L) in 2 weeks.

Whats on the car:
Cobb Catted TBE
Borla header
Turbo XS upipe
Cobb AP V2

Still need to put on the car before tune:
Cobb Intake
Perrin lightweight pulley


I am curious to see what kind of numbers I can get compared to the STI's and EVO's.



Suspension/wheels/tires:

17x9 rota dpt
245/40/17 RE-11
ZZYZX Coilovers
Whiteline front and rear sway bars

I've already test fitted the wheels and tires. Doesn't appear that I need to roll the rear fenders unless I lower my ride height. The rear ride height is set slightly higher than the front.


Thoughts/comments?

With the WRX's 2nd gear, I'd run the 245/35-17 Kumho XS.

With the WRX's 2nd gear, I'd run the 245/35-17 Kumho XS.
:confused:

http://www.tirerack.com/tires/Sizes.jsp?make=Kumho&model=Ecsta+XS

If I was starting from scratch I'd get 17x? where ? is the widest wheel I can legally fit, and run a 245 AD08. I saw some on a 9.5" wheel last weekend on an Evo... they were hardly stretched.

That build looks pretty good though - just gotta start dialing in the suspension.

:confused:

http://www.tirerack.com/tires/Sizes.jsp?make=Kumho&model=Ecsta+XS

If I was starting from scratch I'd get 17x? where ? is the widest wheel I can legally fit, and run a 245 AD08. I saw some on a 9.5" wheel last weekend on an Evo... they were hardly stretched.

That build looks pretty good though - just gotta start dialing in the suspension.


9.5 might be possible to fit on my car. Really all depends on the offset. I was in between the stones and yokohama. I don't think you can go wrong with either one. The tires look slightly stretched on the 9 in wheel.

Haven't gotten to race the car yet. Next event isn't until July 11 but I hope to find another event elsewhere in the time being.

Sorry, I meant Toyo R1-R... (I had just read a post about the XS and I guess I had it stuck in my mind... They do have a 245/35-18 though)

http://www.treadzone.com/tireList.aspx

Search by that size.

FWIW, I run 17x9.5 et44 on my STI, but a 9 would do. If I had a WRX, I'd be looking at Rota DPT's in 17x9 and the above R1-R's.

To bump this up.

I'm close to finishing up my 07 wrx for STU. I made a late decision and decided DS wasn't fun. I will be getting a pro tune done by Jorge(P&L) in 2 weeks.

Whats on the car:
Cobb Catted TBE
Borla header
Turbo XS upipe
Cobb AP V2

Still need to put on the car before tune:
Cobb Intake
Perrin lightweight pulley


I am curious to see what kind of numbers I can get compared to the STI's and EVO's.

Suspension/wheels/tires:

17x9 rota dpt
245/40/17 RE-11
ZZYZX Coilovers
Whiteline front and rear sway bars

I've already test fitted the wheels and tires. Doesn't appear that I need to roll the rear fenders unless I lower my ride height. The rear ride height is set slightly higher than the front.

Thoughts/comments?

Keep this thread updated, that's a pretty good setup you have. I'd like to see how you do.

I would like to see what an 06-07 can do when set up well. Our biggest advantage is gearing (taller 2nd) and weight (200 lbs lighter than an STI), The weaknesses are power and diffs.

As far as your setup, it looks pretty much like what I'd like to do once the money falls into place. Or I get drunk and order more car parts (again).

What about turbo inlet and endlinks?

What spring rates and sway sizes.

BTW, I fit 17x8s et45 with 245/40/17 on mine without rolling fenders. 17x8.5 maybe. 17x9 may take some work.

Wondering how other 08/09s are doing in STU?

Wondering how other 08/09s are doing in STU?

Sounds like you might want to start a new thread.