View Poll Results: What tires (primary) do you use?
Toyo R1R 245
0
0%
Toyo R1R 255
0
0%
Voters: 225. You may not vote on this poll
STR Prep - Wheels and Tires
#101
I'm pretty sure the top guys in the other ST classes do as much (or in the case of ST, more) testing than the top guys in STR. I know about the rumored "magic" 195 Toyo, which can be used to explain away ST, STS, and STX, but does anyone know why STU has settled on different tires than STR has? Do they know something we don't, or do Dunlops just work better on Evos for some reason that's irrelevant to S2000s?
Let me start by saying which tires we've used on our 2006 STI:
Code:
Bridgestone RE-01R Yokohama AD-07 Dunlop Z1SS Yokohama AD-08 Bridgestone RE-11 Hankook RS-3
Code:
Soft Stiff RE-01R AD-07 RE-11 Z1SS RS-3 AD-08
Now I'll re-arrange in temperature tolerance:
Code:
Low Med High RE-01R AD-07 Z1SS RE-11 AD-08 RS-3
Code:
900lbs on each front tire -3* to -4* front negative camber -1/4" total front toe-out 700# to 900# springs with a ~.95 motion ratio 350 ft-lbs at the wheels, 300hp at the wheels
As for the Dunlop and Hankook battle. On both the STI and the S2000 we have seen no significant difference in time between the two. They have their individual strengths and weaknesses. For us, it comes down to weather extremes and driving style.
#102
I'm on my phone at the moment so can't really look, but how many of the top STR cars on kooks were two driver cars?
As a single driver I have been debating switching from rs3s back to star specs because in most weather conditions I am not getting enough heat in the tires to make the rs3s really work unless it is >95 degrees or so.
As a single driver I have been debating switching from rs3s back to star specs because in most weather conditions I am not getting enough heat in the tires to make the rs3s really work unless it is >95 degrees or so.
#103
I was a single driver at Nationals last year on Hankooks but am one that prefers the Dunlops feel a lot more. I might be running on Dunlops for most of this season depending on how it shakes out. Want to do a lot of tire testing at the Lincoln Tour.
#104
I'm rooting for Colin and Matt because I strongly prefer the Dunlops and believe that they are close enough to the RS3s but due to the lemming factor no one wants to use anything other than what is currently winning. If the top 5 guys arbitrarily switched to Dunlops I think this conversation would be completely flipped.
Seems that more testing will reveal when each tire is best and I predict the tire choice will come down to temperature, course type, pavement conditions, and driver preference in feel. Dunlops to me are a better overall tire, but the lateral grip of the RS3 under specific conditions is what people gravitate to.
Is this somewhat right??
Seems that more testing will reveal when each tire is best and I predict the tire choice will come down to temperature, course type, pavement conditions, and driver preference in feel. Dunlops to me are a better overall tire, but the lateral grip of the RS3 under specific conditions is what people gravitate to.
Is this somewhat right??
#105
Registered User
#106
Maybe another difference worth mentioning is that the Dunlop 245/40-17 isn't a dual compound tire and can be shaved unlike the STR-sized 255/40-17. The local STU guys always ran shaved sets and never saw the same tread delamination and whatnot that shows up in some of the other Dunlop sizes.
#109
#110
Originally Posted by legend4life' timestamp='1331164689' post='21487406
Any issues with fender or fender liner rubbing or tire contact on 17x9 +60s in STR trim, ie stiff spring/bar, low ride height, good negative camber, fender lip rolled?