Quote:
Originally Posted by Spaceywilly
cf is a property between two materials and doesn't change as long as traction is maintained. Once the tire breaks away cf begins to decrease but as long as there is no slipping the cf is constant.
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Tire Cf changes all the time.
Edit:
I have to quote Wiki here:
Quote:
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While it is often stated that the COF is a "material property," it is better categorized as a "system property." Unlike true material properties (such as conductivity, dielectric constant, yield strength), the COF for any two materials depends on system variables like temperature, velocity, atmosphere and also what are now popularly described as aging and deaging times; as well as on geometric properties of the interface between the materials.
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