Some basic info from Michelin on track day tyre pressures
Discussion
http://mymichelin.co.uk/track-days/tyre-pressures-...
Straightforward stuff. In a nutshell:
Generally, for Michelin road tyres, the optimum “hot” track pressures will be higher than the standard recommended pressures, typically by around 6 psi (0.4 bar). Heavier cars tend to need a greater increase over the standard pressures than lighter cars. If your tyre pressures are too low, this can lead to excessive flexing of the sidewall, a sensation of sponginess, a lack of steering response and abnormal wear. Pressures that are too high can lead to reduced grip, light steering, and even localised overheating.
Straightforward stuff. In a nutshell:
Generally, for Michelin road tyres, the optimum “hot” track pressures will be higher than the standard recommended pressures, typically by around 6 psi (0.4 bar). Heavier cars tend to need a greater increase over the standard pressures than lighter cars. If your tyre pressures are too low, this can lead to excessive flexing of the sidewall, a sensation of sponginess, a lack of steering response and abnormal wear. Pressures that are too high can lead to reduced grip, light steering, and even localised overheating.
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