Hankook Tire says its new Ventus S1 Evo Z gives us a foretaste of the generation of ultra-ultra-high-performance tyres it will offer in future. We’ve gained a first glimpse of Hankook’s new UUHP rubber on the Mini John Cooper Works GP, where it sees duty as the exclusive original equipment tyre. The fastest roadgoing Mini ever to see light of day wears the Hankook Ventus S1 Evo Z in size 225/35R18 87Y XL.