Originally Posted by s2k4life_az

I currently have AD08 tires (235/40-17 front; 255/40-17 rear) on wheels that are 8" and 9" wide front to back. Do you think I could run 245/40-17 on 8" wheel (lowered at 13" drop with 3.2 camber upfront) without any issues? I'm thinking yes I can. Advise/thoughts?

Here are the comparative specs:

AD08 - 235/40-17
Tread width 9.1"
Section width 9.6"
Overall diameter 24.3"

RE71R - 245/40-17
Tread width 8.6"
Section width 9.8"
Overall diameter 24.7"

Originally Posted by Legal Bill

Just a quick heads up for folks. Most of this has been covered in general on this thread, but here are some specifics, especially for those of us on stock AP1 wheels.

1. At 7.6", the 225/50-16 RE 71-R is almost 1 inch narrower that the same size stock S-02.
2. At 7.0", the 205/55-16 RE 71-R is only 1/10th of an inch narrower than the same size stock S-02.
2. There is no wider 16 inch RE71-R listed on the TR web site.
3. The resulting front to rear difference with RE71-Rs is only 6/10ths of an inch versus the original 1.4 inch difference with S-02s.

In general, I also got some information that serves as a warning to everyone. The Customer Service person at Tire Rack immediately asked me if I am tracking or auto crossing the car when I asked about the RE71-R. He said the tire is really designed for racing and that I would experience a very short street life if I used it for every day driving. I asked if it would last at least as long as the original S0-2s or the RE01-Rs which I am using now and he said he didn't know.

WARNING. Several sources have told me that tire manufacturers are rating their tires with a 200 wear factor in order to "meet" the requirements of sanctioning bodies like the SCCA. This is why some tires have been "rerated" from 180 to 200. It wasn't because the manufacturers reformulated the compound. Obviously, some of these tires will wear much faster than other tires of the same rating. The comments above about rocks sticking to the RE 71-Rs tell me you should be cautious if street use is your main purpose for buying them. I may still give them a try and if they wear out in 5,000 miles, so be it.

Originally Posted by dbwy111

I want to order these for my CR, but I'm a little worried about them being narrower than the factory tires. What size is best for stock CR wheels?

Originally Posted by dedonderosa

yeah this is my dilemma as well. i current have this setup

17x7.5 48et 215/45/17 dunlop direzza Z1 star specs
17x9 45et 245/40/17 dunlop direzza z1 star specs


and i also have heard these run narrow like you said. im looking to be about the same size as what i have now, but would that mean going from a 215/245 dunlop to a 225/255 re71? or would you think i would be ok with just going with stock ap2 sizes?