Thanks Mick: I had forgot that point. In my case then, with a 99 SV 2 wheel drive, if I am unable to get P Zeros for the rear what tire can I use as a replacment for all 4? If I put Rosso's on the rear and Giallos on the front won,t I be mixing tire tread patterns? I have been told that is not a good thing. thanks for the response.