[Dave-ROR]

Originally Posted by deejaytnk

Please correct if I am wrong. For tires of spec 215/45R18, the widest wheel you can mount the tires on are 18x7.5.

From what I observed from the released photos of the BRZ, the wheel well seem to be maxed out by the wheel with the installed suspension. To put in 18x8 probably at max, there needs to be some negative camber and raised height adjustments on the rear.

18x8.5 or even 18x9 are out the questions I would assume.

All input are welcome, please. For a RWD car, not having beefy rear tires just doesn't hold up to what the standards of RWD sport cars are about.

The car will come (the BRZ/FR-S) with 215/45/17s. You don't need 275s to put down 200HP on the street.

For autocross you'll want as small and wide as possible, but it's not all that helpful on the street.

Also wide tires perform worse in the rain than narrower tires in terms of hydroplanning and add additional rolling resistance on a low torque/HP car.

I'll probably run 17x8s with one of the tires I posted up in another thread a long time ago :P