Most people overrate the effect of new tyres too. I guess in britain with such a high level, you need to use a lot of new tyres to squeeze out that last extra bit. Many people take a new set each run to have the exact same feel every time, not always because it is faster. So unless you're really on top and have nothing else left to cut down on your laptimes, take it easy and concentrate on making fewer mistakes instead of spending all your money on new tyres.
Limiting the number of tyres is indeed a lot of work, and what when it starts raining, or when you trash your wheel?
|