I do Long Circuit. I know its different because its proper racing tarmac, better condition and all that rubbish. But I've bought one set of new tyres all year (GP at Cadwell).
I have a set on for practice at Knockhill a week on Saturday that have done:
Kimbolton Clubbie (Feb 07); Cadwell (Apr 07); Mallory (May 07); Oulton (June 07, set Lap Record); Cadwell (July 07); Kimbolton (Nov 07); Rye House Practice (Mar 08); Mallory (Apr 08); Anglesey Practice (May 08).
I ran these tyres at Mallory in september as well, and guess what. won both races in class. Raced against a bloke with new tyres and beat him.
My point? I was told you needed new tyres every meeting at long circuit!
So long as you don't race a class with s.soft tyres, there is no need to buy more than a set every two/three meetings at the most!
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