Originally Posted by badkarma
Hi all,
What do roadracers use for their ITR's for wheel and tire sizing? I'm trying to decide between 15x7 or 16x7 and I assume 225/50 all around.
That'll depend on the class I assume. Do you mean for road racing or driving schools?
I'd run 15x7. Cheaper wheels, cheaper tires. R compounds and full slciks have very hard sidewalls so the advantage of small sidewalls with street tires isn't as big and I'd rather have the wheel mass closer to the hub.