Rubber compound quality is excellent, provides better acceleration and braking distance reduction than its previous generation.... However, these tires have lower side sliding resistance than its previous generation. Tires received harsh wear and were constantly rotated and balanced for testing purposes. Things that stood out: excellent high temperature grip on pavement and concrete, good sidewall protection, rubber compound does not fall to peaces on the corners of the tire when hard cornering. very good tire overall, I'm happy with purchase and would definitively buy again/recommend.