drag tire ???????????





If I had to choose, I'd go with the 17" if I wanted to simulate a slightly better gear ratio. I'd go with the 18's if engine mods made traction a problem and use the extra meat to put it down. Hope this helps.
PS. A search on this would have brought up plenty of info.
Running 17" rims with a ~26" tire diameter would be the same as running 18" rims with a ~26" diameter. Only difference that would matter is the size of the sidewall of the tire. The 18" tire would have a shorter sidewall and probably give you less flex. Therefore, making traction and little bit more difficult.
A C5 can even run a 16" dimeter rim if the car has been modified (rear spindle- easy to do) so the rim does not scrap on the spindle. I have done this to my '99 and then could run 16" late model Firebird rims with Mickey Thopmson ET Streets ( A street legal slick). I would not and do not drive these to the track though, as they are mixing bias-ply with radials up front and handling can be difficult at higher speeds. I now have gone with bias-ply all around and trailer my car to every track event.
My advice- if you don't want to go the 16" route, would be to buy a pair of 17"x 8.5" front C5 stock wheels. Then get some 17" BFGoodrich drag radials that fit a 8.5 " rim. (275/40-17) and go have fun.
Last edited by HawkIVette; Oct 14, 2006 at 10:56 AM.
I am currently running the 26" Mickey Thompson ET Streets. I also have a 4.10 rear end (which I now wished I would have gone with 3.90). I just recently had a Heads/Cam installed along with a few other goodies and increased 80 HP. Now my Elapsed Time (ET) has dropped, my MPH has increased, but I am hitting Redline (or close to Rev Limiter) so much earlier before the line that I don't feel I am getting all I can out of the car. And shifting to 5th just doesn't work. (MN6)
I am going to increase tire size to 27" or 28" and give them a try.
I will lose a little gearing this way, but feel I will make it up on the big end of the track.
BTW- last run a 1/8th mile track, I ran a 7.502 @ 92.98 MPH. Last run a 1/4 mile track was 12.00 @120.04 (still looking for the 11's- I know it's there.)
Last edited by HawkIVette; Oct 14, 2006 at 11:17 AM.










