Bridgestone Battlax S21
Introduced in 2016 to replace the S20, the Battlax S21 uses new compounds – three on the front tyre and five on the rear. The compounds on the front are designed to improve stability in a straight line and under braking. The rear has a hard-wearing central strip surrounded by medium compound sections for performance under acceleration. Then the extreme edges are the softest compound for optimum grip at lean.
What are they like?
Bridgestone launched the S21 at the demanding Bahrain F1 track, and they were more than up to the challenge. Stability under braking was also first-rate, especially impressive on the non-abs bikes. Rear grip while braking was also striking, the rear refusing to break loose until provoked.
Turn-in rate was predictable with excellent feedback, grip was impressive and we could hold on to the brakes with some force up to the apex – more so on the 600cc machines we had on test. The only downside seems to be a lack of feel in colder, damp conditions.
Front: 110/70 R17, 120/60 R17, 120/70 R17, 130/70 R16 Rear: 150/60 R17, 160/60 R17, 180/55 R17, 190/50 R17, 190/55 R17, 200/55 R17 Q Contact www.bridgestone.co.uk/moto
Clever use of compounds delivers plenty of grip