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      06-26-2015, 09:36 AM   #1
Nate4641
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Track/Autocross tires for stock M wheels?

I'm looking to get some stickier tires to mount on my stock M wheels since they aren't doing me any good at the moment, but I'm not sure what brand or size to go with. I looked on Tire Rack and couldn't find anything in the stock size, which I assume is pretty important for engineering reasons, so I'm asking for some advice. I know the stock wheels aren't the lightest which is a good thing for the track, but I'm not worried about that at the moment. I'm also not worried about road use either since I plan on swaping them at the event. I tried searching, but couldn't find anything for these wheels. What would be a good R comp tire to put on stock M wheels and in what sizes?
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      06-27-2015, 07:50 AM   #2
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If you have your heart set on R-Comps you might have to look at going with 245/40 x 18 on all 4 corners. You're only looking at 0.3" diameter decrease in the rear going down from the stock 255 and the increase in grip from the R-Comps will more than compensate for losing 10mm in tread width. In the front the diameter between 225/45 x 18 and 245/40 x 18 is almost identical and the 245's should fit with no issues.
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      06-27-2015, 10:23 AM   #3
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Originally Posted by dc_wright View Post
If you have your heart set on R-Comps you might have to look at going with 245/40 x 18 on all 4 corners. You're only looking at 0.3" diameter decrease in the rear going down from the stock 255 and the increase in grip from the R-Comps will more than compensate for losing 10mm in tread width. In the front the diameter between 225/45 x 18 and 245/40 x 18 is almost identical and the 245's should fit with no issues.
Thanks! Any recommendations on brand and model of tire to go with?
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      06-27-2015, 11:26 AM   #4
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Hoosiers are still the gold standard, but they know it and price their tires accordingly. The Toyo Proxes R888 might be a good compromise tire since it's an R-Comp but also has water channeling so you can run it in the wet too. The other R-Comps are dry use only unless you get a wet use tire and then they aren't very good in the dry.
After you get the R-Comp sticker shock, you might want to consider a set of high performance "street" tires like the Bridgestone RE71 or the Hankook R-S3. You can get two or even three full sets for the price of one set of R-Comps.

http://www.tirerack.com/tires/types/...t.jsp?perf=DRY
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      06-27-2015, 12:10 PM   #5
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Why R-Comps?
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      06-27-2015, 03:31 PM   #6
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Why R-Comps?
Because Race Car!
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      06-27-2015, 07:10 PM   #7
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Why R-Comps?
I've driven with some good street tires before and it was nice, but after doing the Nurburgring in a car with r-comp tires I loved how much better grip I got. I'm not really worried about setting the best lap times or being the fastest at the local autocross, I just really like the level of traction and confidence I get out of that much better of a tire.
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      06-27-2015, 09:55 PM   #8
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The lettering on the Hoosier R-Comps is purple and those tires are nicknamed "purple crack" because once you've driven on them you're hooked. I've co-driven a couple other peoples cars on R-Comps at Autocross on a concrete runway and the grip is just unbelievable. I've avoided running my car on R-Comps just because I know once I do, running in Street class won't be very satisfying.
Let us know what you decide to buy and how they work out for you....
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      06-27-2015, 10:57 PM   #9
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Quote:
Originally Posted by Nate4641 View Post
I've driven with some good street tires before and it was nice, but after doing the Nurburgring in a car with r-comp tires I loved how much better grip I got. I'm not really worried about setting the best lap times or being the fastest at the local autocross, I just really like the level of traction and confidence I get out of that much better of a tire.


Rock on!
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      06-28-2015, 08:26 AM   #10
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Originally Posted by dc_wright View Post
The lettering on the Hoosier R-Comps is purple and those tires are nicknamed "purple crack" because once you've driven on them you're hooked. I've co-driven a couple other peoples cars on R-Comps at Autocross on a concrete runway and the grip is just unbelievable. I've avoided running my car on R-Comps just because I know once I do, running in Street class won't be very satisfying.
Let us know what you decide to buy and how they work out for you....
Right now the decision is split between some super sticky tires or coilovers. I'm leaning a little more towards coilovers, but I also really want a use for the stock wheels I have just sitting around. I already have good all season tires on my MORRs so I all I can think of for the stock wheels is something for racing.
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      06-28-2015, 11:16 AM   #11
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Sell the stock wheels and use the cash to help fund the coilovers?

Spending the $$$ for the R-Comps and then putting them on some heavy stock wheels just seems a form of heresy.
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      10-21-2015, 06:30 PM   #12
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Personally, I would go with a competitive street tire like the RE71's or the Rival S. Then, spend the left over money on coil overs. Currently I'm running RE71's in autocross and I'm very happy with them. It's easier to learn on a street tire as well.
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      01-10-2016, 05:31 PM   #13
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Nate6461,

I didn't see a mention on your level of experience. I have always been told R-Comps can mask poor driving habits of less experienced drivers.

Just curious, why do you say the heavier Stock wheels are good for the track? I was always of the impression that Lighter is better.

IMHO, the high end performance street Tires like the R-71's , BF Goodrich Rivals, MPSS, Nitto NT01 and several others, all provide an excellent Track experience at reasonable cost.

Last edited by Bossdog; 01-10-2016 at 05:44 PM..
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      01-11-2016, 09:05 AM   #14
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Quote:
Originally Posted by dfjaws View Post
Personally, I would go with a competitive street tire like the RE71's or the Rival S. Then, spend the left over money on coil overs. Currently I'm running RE71's in autocross and I'm very happy with them. It's easier to learn on a street tire as well.
^this.

M2C;
I have seen many track enthusiasts jump to R-comps much too soon.
IMO if you are not at or approaching expert levels of driving, R-comps will impede your learning.

R-comps give little noise feedback as you approach grip threshold.... cross the threshold and you're gone.
Also because there's so much grip it will mask your input errors.

So; unless you are already driving the ass off of high end street tires......
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