275/35/zr19 bfgoodrich kdw2 vs 315/35/zr19
presently, i have the 275/35/zr19 Bf Goodrich KDW2s for my rear tires and its almost time for some new ones! i was wandering if anyone knows if there is a significant difference in grip between the two of them because i would like some more grip and as far as i am concerned, the KDW2s are top of the line for grip. The only catch is that the 315's are $75 more per tire and i dont wanna spend it unless i know it will be well spent!
any input would be greatly appreciated!