Quote Originally Posted by 1996 328ti View Post
The T1R replaced the T1S.
Actually the Toyo T1R replaced the T1 Plus, which replaced the T1S.

IMHO, with its 280 treadwear rating, the T1R a true high performance tire for long-term highway duty.
The Bridgestone RE-01R, Dunlop Z1 and Falken Azenis 615 with their 140 treadwear ratings are "street" tires for someone who expects the tires to see lots of autocross and/or track duty.