Tire - Battlax Sport Touring T32 GT - Rear - 170/60ZR17 - 72W Wet performance has improved with "Pulse Groove Technology". The stability and wear resistance required for long touring have also improved, Tread pattern design more effectively evacuates water, and silica rich compounds provide confidence in wet weather conditions, Specific GT spec for heavier bikes provides additional stability and 10% more wear life, based on Battlax T32 Bridgestone Battlax T31 tire from internal testing. Results may vary.