Conti Challenge Z34 Wheel sizes

GSS138

RPF1's 10.5 are +15 With a 285/35/18 tire, and about -3.0 or greater camber in front, they clear just fine if that helps. Judging by Doran's specs, with proper camber, +5 or +10 would probably be in there and work fine. My fenders are not rolled, but my front right wheel does sometime catch my fender a little tiny bit and sort of "self rolls it" I think it is more of a ride height issue though. Once the tire tucks inside under compression it's fine.

Any more tire height than that though you better be 400+ whp. I think that is what BJ is getting at. The rolling radius of the rear tires makes a big impact on the acceleration of any car, it needs to match the HP/FD ratio. That's why FI drag cars and all big horsepower cars run really big radius tires.

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Current Mods: Vorpal Weapon +5.