Originally Posted by JHM2K
Absolutely.
Can you tell me what your rear tire specs are? A thinner sidewall would certainly made the OD smaller, yielding an effectively lower gear (or in your case, closer to stock).
Problem is, the thinner the sidewall, the less sidewall flex you have and therefore the easier it is to break traction for a launch. The 20's are killing you, but they sure do look pretty. Even the factory 19's on our cars are torque-stealing boat anchors. There's a reason Les is running 18's all-around...
John I am planing on attending a couple of Hooked on Driving events this year as well as the Crossfire event in NC. I have been putting this set together for a while and picked up the 18" all around ADR wheels with Toyo R888 dedicated track tires set yesterday. We put them on the car to check fitment and then I drove it over to the twisties to check them out.
I could really feel the difference in accelleration over the 19/ 20"s. I had no idea it could make that much difference. The fronts are 225/40ZR/18 and weigh 40 lbs( bathroom scales) and the rears are 295/30/18 and weigh 48 lbs. No rubbing and a lot of fun. Probably did not get them heated up good so the best is yet to come.
I am sure there are much lighter wheels out there but I got this set up in my budget with the main focus of saving the wear and tear on the pilot super sports.
BTW I have a set of Hoosier P275/40R/17 drag radials that I have had for a while and yet to try. LOL.