As a side note, as I have run 16',17',18'&19' wheels/tires. From a ride quality/feel for the car, I like, 18's w275/40 tires. I really like the feel of 17's, just a tic smaller in diameter. I do not like the way the 19's feel with 285/35s. Just feels less responsive. Current street tires, 245/45/17s, and 275/40/17 for track. 19s may look the best, filling out the wheel arches. I know I will not be trying any 20s.