Posting this for my buddy, from his FS thread on M3forum.com
I just picked up a set of new tires so these need to go. Selling 4 used NT01's in 275/35/18. 5 track days. Tires were swapped at the track and used on the track only (not driven on to the track). Still has a good amount of tread left and many run NT01's down to the cords. Tires are off the wheels and none have been patched.
$380 OBO. Located in San Diego, CA.