Road conditions makes a difference on a street car too. The taller the wheel, the shorter the tire. Shorter tire = slightly less protection for the wheel. If your roads are in great shape, this may not be an issue, but here in the Midwest, bent wheels are always a worry.
I have accepted a new position at Tire Rack and am no longer in the sales department. firstname.lastname@example.org
is available to assist with M3 questions.