Under the skin: the tyres that adjust their tread to suit the conditions
The properties of the polymer-like materials change depending on the temperature to suit surface conditions. Pirelli claims the compound of the new tyre has been developed using a patented process derived from its experience in motorsport to produce a compound that is more uniform in its consistency, improving performance over a longer period of time.
The Scorpion SF2 all-season tyre has sipes that change shape to suit cold, severe winter conditions and wet or dry Tarmac. The sipes are open to get a better purchase on snow, but in wet or dry conditions they close up to increase the stiffness of the individual blocks, something that’s important for grip and steering feel, especially when working hard in the dry.
The Scorpion Winter 2 tyres take a novel approach to the sipes, which improve grip on low-temperature surfaces as well as snow and ice. The 3D sipes are ‘extendable’ and can change from a linear shape to a zig-zag pattern to increase their surface area as the tread wears. Pirelli expects 400 variations of tyre size from the entire range to join manufacturers’ original equipment lists. Half of those are for new EVs and 75% of tyres listed so far from the summer range alone are for EVs. The latest version is also said to move the game on in relation to reducing road noise and energy consumption, while improving braking performance at the same time.
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