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Old 05-08-2019, 04:28 PM   #6426
AustinTX
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I'm running 17x10 +38 RPF1 up front with a 5mm spacer and 17x9 +45 Kosei K1 in the rear with no spacer on my GD.
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Old 05-08-2019, 05:59 PM   #6427
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Originally Posted by subydude View Post
What's a good size on the GD for a 255? I've been starting to look for wheels that would fit the 05 I have and was hoping to stick to 17's. Thinking a 17x9 and 255 but didn't know what offset or if it would fit without rub/rolling.
With 255s on 17x9's a +45 is pushing it on the inboard side of the fronts, depending on tire selection. RE71R's and ZII's touched spring perches requiring 5-10mm spacers, but the same size RS3's before cleared fine. This is @ ~-3.1į camber with RCE T2's, slanted camber plates and crash bolts.
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Old 05-08-2019, 06:31 PM   #6428
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I'm assuming lower offset is fine with that much camber then. I'd rather run a +35 or +40 if the outer fender will take it.
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Old 05-08-2019, 06:49 PM   #6429
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The rear quarter panel will be where it starts to get tight with a lower offset. I still rub slightly with a roll and +45 in the rear. I've found with ~3į-F ~1.5į-R and a moderately low ride height, that there'a about a 3/8" difference in the distance from the edge of the fender to the tire between the front and rear. Using 10mm spacers in front brings it close to equal with the fronts still slightly inset.
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Old 05-11-2019, 01:37 AM   #6430
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I was able to fit a 17x10 +50 up front with a 3mm spacer. Just enough inboard clearance to the strut and plenty of space on the fender side, no rolling required.

Rear will take a lot more work to fit the 17x10s, so Iím keeping my 17x9 +42 back there for now. Just enough offset to keep it away from the fender.

255ís on both.
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Old 08-06-2019, 09:57 PM   #6431
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Does anyone have a ride height recommendation for novice autocrosser in 2019 on RCE T2s 500/600 springs? Sway bars stock.
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Old 08-07-2019, 11:21 AM   #6432
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Does anyone have a ride height recommendation for novice autocrosser in 2019 on RCE T2s 500/600 springs? Sway bars stock.
I don't know about 19's. On my 13 I set the the ride to 1" inch lower and let the shop do the corner balance. A decent corner balance shouldn't be too expensive and I highly recommend it.

Even though you have stock sway bars, you probably want to get some adjustable end-links if you are changing ride height.
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Old 08-07-2019, 04:24 PM   #6433
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Originally Posted by no2ce View Post
Does anyone have a ride height recommendation for novice autocrosser in 2019 on RCE T2s 500/600 springs? Sway bars stock.
Go as low as you can without inverting the suspension geometry.
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Old 08-08-2019, 08:21 AM   #6434
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Originally Posted by Kostamojen View Post
Go as low as you can without inverting the suspension geometry.
This. I'd even say stop before the arms look completely flat.

Quote:
Originally Posted by no2ce View Post
Does anyone have a ride height recommendation for novice autocrosser in 2019 on RCE T2s 500/600 springs? Sway bars stock.
But with the VAs, if you daily it, I'd say don't go further than what RCE does for their yellow springs' drop for ground clearance.

I'm debating on my suspension setup and if I'm to go coilovers I'll probably try to keep stock height if possible, if not 10mm lower. I also approve of your T2s -- had them on my GD and I loved them.
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Old 09-26-2019, 01:21 PM   #6435
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I had a 2010 STI and sold it. In a 15 Z/28 but looking to get back into an STI (want to build something for STU). I am looking to get an 05 or 06 sti so I can really get into autocross more. Trying to plan things out because I should have some money to put into it. I was thinking the first three things will be an extra set of wheels and tires, seats, and coilovers.

Wheels titan 7 tr10 17*9.5 +51
tires- 255 or 265/40/17 (i was hoping the 265 would fit in the rear with the offset above and running some negative camber)
coilovers- MCS 2 ways
Seats- status racing fixed backs

This seem reasonable for mid-level products (not super high end)?

I am also going to invest in some things to protect it from breaking- radiator, oil cooler, upgraded water pump, AOS, killer b oil pan and pick up.

Thanks!
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Old 09-26-2019, 07:50 PM   #6436
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How bad do you want one? I could be convinced to sell mine. 06 STI with a full refresh and all the goodies on it. 4 years with it, 4 podiums at nationals. PM me.
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Old 09-27-2019, 09:25 AM   #6437
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Originally Posted by Dromo3 View Post
I had a 2010 STI and sold it. In a 15 Z/28 but looking to get back into an STI (want to build something for STU). I am looking to get an 05 or 06 sti so I can really get into autocross more. Trying to plan things out because I should have some money to put into it. I was thinking the first three things will be an extra set of wheels and tires, seats, and coilovers.

Wheels titan 7 tr10 17*9.5 +51
tires- 255 or 265/40/17 (i was hoping the 265 would fit in the rear with the offset above and running some negative camber)
coilovers- MCS 2 ways
Seats- status racing fixed backs

This seem reasonable for mid-level products (not super high end)?

I am also going to invest in some things to protect it from breaking- radiator, oil cooler, upgraded water pump, AOS, killer b oil pan and pick up.

Thanks!
You're not going to find any 265's in 17" size. Most GD guys are staying with 255's on 17's... doesn't seem worth it to go to 18" wheels and 265's. That being said, the new Yoko's are definitely the tire to have after seeing national results and the largest Yoko for STU is 265...

If it were me, I'd pause on an STU build. I bet were going to see some fresh contenders/rules coming to the class. I think a GD STI will still competitive and if its what you want, there are many builds to learn from or maybe you can buy one from someone.

As for me, I'm hoping they give the RWD cars 295's, so we can get our tire size advantage back on the Yoko's.
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Old 09-27-2019, 10:49 AM   #6438
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Originally Posted by jesup16 View Post
You're not going to find any 265's in 17" size. Most GD guys are staying with 255's on 17's... doesn't seem worth it to go to 18" wheels and 265's. That being said, the new Yoko's are definitely the tire to have after seeing national results and the largest Yoko for STU is 265...

If it were me, I'd pause on an STU build. I bet were going to see some fresh contenders/rules coming to the class. I think a GD STI will still competitive and if its what you want, there are many builds to learn from or maybe you can buy one from someone.

As for me, I'm hoping they give the RWD cars 295's, so we can get our tire size advantage back on the Yoko's.
The whole point of the tire size advantage for RWD along with the LSD allowance for them was to help put power down on par with the AWD cars back when street tires really struggled with doing so. That ship has sailed years ago. STU was won two years in a row by a Z on first 265s, then 275s, then this year by a 3600lb E92 M3 on 265s.

The boost buggies donít have really any advantage left these days. Their thrust advantage is gone.

The 255 is fine on the GD, but the 265 on a wide front wheel is a significant step up. Itís not that hard to make the 265 work in the rear of a GD either. Several have done it. When you start doing math and realize a nose heavy pig of an STi can easily exceed the load rating of the smaller tires, it really makes sense to try and put the bigger one up front.
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Old 09-27-2019, 01:44 PM   #6439
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I might go with another GR then. Trying to keep my budget around 15k for the car and 15k for parts. The kicker is that I want to pick most of the parts and do the work myself (versus just buying something already built). Not necessarily needing the car to be national level capable. Just want something fun and half way decent. I have owned 3 Z's in the past (never a 350) so that may be an option but having a 4 door isn't terrible to have.
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Old 09-28-2019, 09:49 AM   #6440
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Originally Posted by Thorium06 View Post
The whole point of the tire size advantage for RWD along with the LSD allowance for them was to help put power down on par with the AWD cars back when street tires really struggled with doing so. That ship has sailed years ago. STU was won two years in a row by a Z on first 265s, then 275s, then this year by a 3600lb E92 M3 on 265s.

The boost buggies donít have really any advantage left these days. Their thrust advantage is gone.

The 255 is fine on the GD, but the 265 on a wide front wheel is a significant step up. Itís not that hard to make the 265 work in the rear of a GD either. Several have done it. When you start doing math and realize a nose heavy pig of an STi can easily exceed the load rating of the smaller tires, it really makes sense to try and put the bigger one up front.
LOL... there definitely still exists a thrust advantage. Going from a STI to a C5, its very noticeable. And lets not forgot the launch advantage... that hasn't changed a bit. And when was the last time a RWD STU car won the pro?

Let's remember who won a couple of those years in a Z... Heitkotter is an alien among aliens... he would have won on 215's. The result this year had a lot to do with course design, which is an unfortunate aspect of competing in STU with dynamically different platforms.

IMO, the 265 Yoko can be just as wide as the 275 BFG and very close to the 285 RE71R. So they have all but negated the tire differentiation, which is what balanced the class in the first place.

I'm really hoping they let some new cars in to the class this year to see if we can get some more attendance... cough, M2, cough.
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Old 09-29-2019, 01:04 PM   #6441
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LOL... there definitely still exists a thrust advantage. Going from a STI to a C5, its very noticeable. And lets not forgot the launch advantage... that hasn't changed a bit. And when was the last time a RWD STU car won the pro?

Let's remember who won a couple of those years in a Z... Heitkotter is an alien among aliens... he would have won on 215's. The result this year had a lot to do with course design, which is an unfortunate aspect of competing in STU with dynamically different platforms.

IMO, the 265 Yoko can be just as wide as the 275 BFG and very close to the 285 RE71R. So they have all but negated the tire differentiation, which is what balanced the class in the first place.

I'm really hoping they let some new cars in to the class this year to see if we can get some more attendance... cough, M2, cough.
Lol the C5 has won how many times? Full disclaimer, we have an STU Z, and STi.

Your opinion on the yok width is just that. An opinion, not fact. They are not as wide as 285 RE71s. I was there..
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Old 10-02-2019, 08:48 AM   #6442
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Old 10-03-2019, 01:51 AM   #6443
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Lol the C5 has won how many times? Full disclaimer, we have an STU Z, and STi.

Your opinion on the yok width is just that. An opinion, not fact. They are not as wide as 285 RE71s. I was there..
265 looks just as wide to me...

https://photos.app.goo.gl/kYjB99gSYbfDwuys6

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Old 10-15-2019, 11:05 AM   #6444
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My car is for sale now - on the C8 waitlist. https://www.facebook.com/marketplace...8052663275441/
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Old 10-16-2019, 12:44 PM   #6445
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My car is for sale now - on the C8 waitlist. https://www.facebook.com/marketplace...8052663275441/
Sad to see it go... another STU driver gone... Good luck with the C8. It looks like a great car in the few video's I've watched. Got to see it in person along with the C8R at Rd. Atl last weekend. I think you'll be very happy.
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Old 10-16-2019, 02:41 PM   #6446
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I don't want to leave STU - I know the STAC is looking at the decline and is considering things to make the class more enticing. I just need a change and can't keep all of my cars. Besides, whoever buys it might stay in STU anyway :P
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Old 10-16-2019, 04:52 PM   #6447
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I want parts off it, but I also don't need them

I'm going to wait 7-8 years on a C8 for depreciation to hit the wide body version that will be out in 2022-2023.
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Old 10-17-2019, 01:54 PM   #6448
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I don't want to leave STU - I know the STAC is looking at the decline and is considering things to make the class more enticing. I just need a change and can't keep all of my cars. Besides, whoever buys it might stay in STU anyway :P
Yeah, I hope you get to sell it as is and it stays in STU. I've been on the bandwagon to get STU changes for a while... when the "ideal" cars are pushing 15+ years old, something needs to change, unless its STS.
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Old 12-10-2019, 09:57 AM   #6449
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I'm thinking about tires for next season and looking at the Yokohama A052 or the BFG Rival S1.5. I've been running Re71's the last two years and have no complaints but I'd like to try something new. The reviews I can scrounge say that it performs but will die extremely quickly with camber challenged vehicles. Has anyone heard anything or used this tire on a Subaru with 2.5-3.5 degrees negative camber?
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Old 12-10-2019, 05:15 PM   #6450
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I'm thinking about tires for next season and looking at the Yokohama A052 or the BFG Rival S1.5. I've been running Re71's the last two years and have no complaints but I'd like to try something new. The reviews I can scrounge say that it performs but will die extremely quickly with camber challenged vehicles. Has anyone heard anything or used this tire on a Subaru with 2.5-3.5 degrees negative camber?
3.5 degrees isn't exactly camber challenged, but a Subaru will require a good setup to not chew through the front tires regardless. RE71's are fast but will heat cycle out before they run out of tread. BFG's will be just as fast or faster for the same size with a good setup and will get harder to drive as they wear down past 2/32, but they will still be fast until nearly bald. No experience with Yokohama since my order from June never arrived prior to solo nationals in September. #notevenbitter
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