i have just started this year doing track days and have been making various improvements to my cobra. I went back and forth between 15 and 17, but decided to stay with 15 inch. I am not trying to push everything to the limit on the track, so the 15 should still be fine.
I did just get the 15 Avon's - which are supposed to be "the" tire.
I'll find out 7/30 and 7/31 on the track.
From a "look" standpoint, you can't beat the 15's! I figure if I am not going super fast, i should at least be looking super fine :P
Untitled by
sspano01, on Flickr