I used to run 275/40-17 all around for track use. Tire selection sucks, but they do offer an NT01 in that size. NT05 is still available, but they are junk to a whole new level.

If you track for fun, just get NT01 and have fun. If you want yo be on 200 tw track tires, you will need 18's

 

Yea, all I do is track for fun, but would like more tire choices, so I think I'm going to try to get a set of 18s. The NT05s are okay to me, but the last tires I used prior were RT615s so I'm not quite in the know.

 

Just do NT01 and call it good. They are fast , affordable in your size and heat cycle well