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Old 07-29-2007, 09:40 PM   #26
wirolla
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subscribed! I am in to see what everyone thinks. I think that 235/40/17 would be better, because of the gearing. I am going to need to replace my 215/45/17 soon....(they're on 8" wide wheels, but thats how I got them). Now I have to find some threads about running this size on a wagon(don't worry, I will search!)
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Old 07-30-2007, 12:52 AM   #27
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i'm going to be running the 245/40 re-01r on 17x8 5zigens in STX this season, moving up from my 225/50/16 falkens.

So far it feels really good turn-in wise, but i haven't run an event on them yet.

One thing i don't understand is the gearing advantage...doesen't having a 40 series sidewall on both tires give the same gearing?
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Old 07-30-2007, 12:56 AM   #28
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Quote:
Originally Posted by r0nzar View Post
i
One thing i don't understand is the gearing advantage...doesen't having a 40 series sidewall on both tires give the same gearing?
No, the 40 is the percentage of the width.

245 * 40/100 > 235 * 40/100.
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Old 07-30-2007, 08:33 AM   #29
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i thank U very much...............................
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Old 07-30-2007, 10:39 AM   #30
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^ your welcome
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Old 07-30-2007, 11:03 AM   #31
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I think it really depends on how your car is setup. You'd have to do a lot of testing to find a difference and even then it may vary from event to event.

I do know that 245/40R17 RE-01R's took 1st, 3rd, & 4th in STX at the Toledo ProSolo this last weekend. 235/40R17 Advan Neova's took 2nd, 5th, & 6th. All on WRX's. A lot of that is car setup and driver though. If you actually look at times and account for cones...there wasn't a whole lot of difference between the cars, drivers, and tires.

Last edited by Scooby921; 07-30-2007 at 02:23 PM. Reason: lapse of judgement
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Old 07-30-2007, 11:25 AM   #32
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good info- I know the Neova runs a little wider (at least in the 235/40)

RE01R 235/40 section width 9.5", tread 8.5" 245/40 9.8/9.0

Neova 235/40 9.6/9.1, 245/40 9.8/9.4

the 245/40 is still a little bit shorter than the oe tire (couple of tenths)

curious what setups would lend themselves better to the 245 vs the 235
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Old 07-30-2007, 11:36 AM   #33
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Quote:
Originally Posted by springwrxsti View Post
I am not an autocrosser, but I do road race.
Tire technology has changed a bit since the 60s.


"I do" implies habitual involvement in some activity.

"I have" implies something done a few times.

By using the implied "I do" form of "I do road race", you imply that you have been doing it regularly.

Either you have poor control over the English language, or you are trying to sound like you know something which you don't.
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Old 07-30-2007, 11:40 AM   #34
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yep...

Last edited by angryfist; 07-30-2007 at 02:45 PM. Reason: removed for bad info
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Old 07-30-2007, 11:42 AM   #35
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Quote:
Originally Posted by TyrannoSullyRex View Post

Either you have poor control over the English language, or you are trying to sound like you know something which you don't.
Perhaps he's a past/current HPDE Championship winner?

-Biggly
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Old 07-30-2007, 11:54 AM   #36
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Quote:
Originally Posted by TyrannoSullyRex View Post
Tire technology has changed a bit since the 60s.


"I do" implies habitual involvement in some activity.

"I have" implies something done a few times.

By using the implied "I do" form of "I do road race", you imply that you have been doing it regularly.

.
......

Last edited by springwrxsti; 07-30-2007 at 04:17 PM. Reason: Post OT
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Old 07-30-2007, 12:03 PM   #37
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Quote:
Originally Posted by springwrxsti View Post
I DO road race, and have been doing so for quite a few years.
Alright then, see ya Saturday at MSR.
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Old 07-30-2007, 12:04 PM   #38
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Quote:
Originally Posted by springwrxsti View Post
I DO road race, and have been doing so for quite a few years.
What do you road race?
What class?
Where?
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Old 07-30-2007, 12:13 PM   #39
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Originally Posted by TyrannoSullyRex View Post
Alright then, see ya Saturday at MSR.
......

Last edited by springwrxsti; 07-30-2007 at 04:18 PM. Reason: Post OT
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Old 07-30-2007, 12:23 PM   #40
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.........

Last edited by Scooby921; 07-30-2007 at 02:21 PM. Reason: meh
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Old 07-30-2007, 01:54 PM   #41
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Quote:
Originally Posted by cooleyjb View Post
What do you road race?

Where?

.....

Last edited by springwrxsti; 07-30-2007 at 04:19 PM. Reason: Post OT
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Old 07-30-2007, 03:44 PM   #42
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Quote:
Originally Posted by BIGSKYWRX View Post
good info- I know the Neova runs a little wider (at least in the 235/40)

RE01R 235/40 section width 9.5", tread 8.5" 245/40 9.8/9.0

Neova 235/40 9.6/9.1, 245/40 9.8/9.4

the 245/40 is still a little bit shorter than the oe tire (couple of tenths)

curious what setups would lend themselves better to the 245 vs the 235
Ive noticed more of a difference in sidewall than in total grip. The 235s turn in/transition better but dont put power down as well on an STi. Since putting the power down isnt as big of an issue in wrxs I would stick with 235s. They should only be a disadvantage in courses full of sweepers.
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Old 07-30-2007, 03:57 PM   #43
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^ thanks- I'll probably give the 235's a go
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Old 07-30-2007, 06:30 PM   #44
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Quote:
Originally Posted by BIGSKYWRX View Post
^ thanks- I'll probably give the 235's a go
Since the performace benefit is questionable, some of the faster WRX's have gone with the cheaper option(currently $-44 compared to 235/40): 245/40 RE-01R.
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Old 07-30-2007, 07:43 PM   #45
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Well, if it adds anything to your decision...I just bought (today) a new set of 235/40R17 Advans shaved to 5/32".
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Old 10-23-2007, 10:51 AM   #46
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With the season over, does everyone still agree the 235/40 is the way to go (vs the 245)?
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Old 10-23-2007, 07:41 PM   #47
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Thanks for bringing this thread back from the dead, Biggy. I'd love to know the experts thoughts on this.
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Old 10-23-2007, 09:14 PM   #48
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yeah - have a little time now before having to make a decision
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Old 10-23-2007, 09:25 PM   #49
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From what I'm reading it's more about Neova v RE01R than the sizes per se. Both were really well represented at nationals.

john
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Old 10-23-2007, 10:45 PM   #50
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Yeah it looks in ST* , both were well represented. Are you saying that everyone (Impreza's) has agreed that the 235/40 is the size, just which brand tire to run?
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