Registered Forum User
500SD
Posts: 762
Join Date: Apr 2004
Location: Switzerland and Dorking
Mood: Missing my Flash...
I have a 748S, I use Diablo Corsas on mine. 4000 miles on a rear, more or less double that on the front.
So it sounds like yours are about ready for a change. If the front feels like that, then probably best to change both. Bit more money, but always feels so much better.
I used Bridgestones on my old R6, they seemed to be ok, but somehow the Pirellis feel a bit more stable. Mind you, that could be the bike!