Metzeler Racetec Interact
Metzeler Racetec Interacts offer superb performance at a decent price point. The Interacts come in the following three compounds:
K0 Supersoft – You won’t often see these on track days as their very short life span means they don’t give track day rider’s good value for money. Racers generally use them for qualifying in hot temperatures.
K1 Soft – These are a lot more popular on track days and are often found being used as front tyres combined with a K2 rear. Some people do use them for rears but they’re not quite as popular as they don’t offer the same life span for track days.
K2 Medium – The more popular for rear tyres, the K2 has a great life span but still grips good and proper.
Just a note – there is a K3 but that is a road biased tyre and isn’t in the same class as the above compounds some teams use it for longer Superbike Endurance Races.