Front wears quicker on ZZR1200> front wear is my indicator for changing tyres
Using on a Kawasaki ZZR1200, Isle of Man (not the best roads- many negative camber bends), climate is cool and rarely above 20degrees (real feel). Bike originally fitted with BT020 which wore rather quickly, replaced with BT021 (better wear) and now have a few thousand miles wear on BT023, front and rear wear is significantly better than both predecessors (BT020 and BT021). I have had my tyres tampered with and have lost air out of both, did not notice immediately(both almost flat) but yes could ride these at high speed almost flat (in cool climate) without any noticeable damage. I recall a cold day in winter (pressures good (around 40/ 41 - both) bike hit a gentle double wheel slide mid bend and both tyres caught the bike at the same time meaning no crash, have had a double wheel slide on BT016 also in wet on lean and again was able to pick it up. Never had the BT023 step out of line, I don't ride on the edge, do ride straight line fast but do ride with cold conditions.. Bridgestones have never let me down- wear is better that Conti Road attacks (seem softer). this never has a problem throwing the torque down, they stop well, neutral cornering for predicatble riding.. have considered pilot road 3 as alternative but prefer considering BT023 GT next (extra centre belt on rear) to see how they perform before moving brands. safe riding!