I actually bought the R888Rs so I can run in the rain without changing tire. Done wore'em out, (~2000 track miles) and not one drop of rain. lol I have been on track w/NT01s and it started raining. I was surprized just how well the 01s worked in the wet. Neither of those is a slick. I would tiptoe back to the pits if caught in the rain with full slicks. Thats been my first hand experience.