Good info I found on the R888
This is very usefull, since it is a diferent desing that the ra1 to get the best performace out of them they need to be ran at 45 to 47 psi hot while the ra1 like around 38 psi hot, so a 40psi may be a good starting cool starting point on the R888.
Maybe that's why 949racing was recomeding me the NT01 over the R888 because almost everyone runs the R888 at the psi that the ra1 likes.
I did some searching & people that bump the psi on the R888 say they wear evenly & the more they wear the faster they get. As they wear down to the belts they behave like full slicks.
Read the info on the link below.