The T1-R replaces the T1-S, which was one of the top tires for rain traction, and the new one is an evolution of that design.
Certainly, I can recommend them just because I'm a T1-S fan....those tires were great street tires, very grippy, comfortable ride, and awesome wet grip.
Initial reviews for the T1-R seem to indicate they are every bit as good as the T1-S were.
If you're bent on getting the best rain grip, you are picking one of the best. I'd certainly pick the T1-R over the ES-100 myself. The reviews of the ES-100 are a bit mixed. Aggressive drivers would be better choosing the T1-R
(Message edited by rayt on March 23, 2005)