I am currently running 315/35/20 Nt05 (non R) on my rears and have had no problems driving in the torrential rain we get in Vancouver. I was just wondering how much worse the NT05R's are in the wet as I am considering them over buying a set of *15" rims and dedicated drag tires. I am not worried about wear as I am only getting about 7500miles per set of rears as is.