I was looking at some 18" SSR GT1 wheels, but I'm wondering if these might slow me down. Anybody out there have a suggestion?

 

Yes, it does. If you're going to go bigger, try to find something that is pretty light. Example, on the S2000 you could slap on some RH CP0-35's in 17x9 and 17x8 that are actually lighter than stock.

 

What is the weight of the stock wheel anyway? Matt.

 

\"Wheels - Approx 18lbs Front, 19lbs Rear \"

 

18's are for show...they will slow you down during the launch (compared to a stock S2000). Expect about 1/2 a car length loss on the launch with some super sticky 255/35/18's in rear. I loose a whole car length with some semi sticky 245/35/18 (Toyo T1-S). I recently changed my rears to 255/35/18...I am estimating that I will still loose 3/4 car length on the launch.

From personal experience, if you stay around 17 lb. per wheel for 18 inchers (18x8.5 & 18x7.5 TE37's), and don't exceed a 25 inch overall diameter for your tires (max of 225/40/18 in front and 255/35/18 in rear)...you won't loose all that much when you are already moving.

If you must go bigger...go with some light 17's. And some good 215/45/17 and 245/40/17 tires (S03's).

 

Mine are 17" w/ 40 series and slippery rubber. More for show and long life than racing. I'll be interested to see how they preform on the track next week... not optimistic.

 

[QUOTE]Originally posted by Turbeau
[B]Mine are 17" w/ 40 series and slippery rubber.

 

Won't a larger overall diameter actually slow the rate at which your odometer adds on miles as well as make your speedometer show less than your actual speed? Not that these are bad things, but is there a correction for that?

 

The correction for that is to go with a lower profile tyre so the diameter is the same!!! That's the easiest fix!

 

Sumitomo 225x45 ZR 17

They last forever, but grip... forgetaboutit.