I recently switched from NT01's to the R888R's on my GTR that only see's the track. I can confidently say that the new R888R's are a better tire than the NT01's and the NT01's are a great tire. In actuality, the R888R's are more of an upgraded version of the NT01 as opposed the R888.

Once I wear through the R888's on my ACR, I will be replacing them with the R888R's.