hey guys, ok here's something technical to challenge you- can anybody tell me the coefficient of kinetic and static friction for the stock tires on a 2003 2.5rs- Bridgestone Potenza RE92 16" etc etc...

also, if possible do do you have a link or source of the info.

I emailed bridgestone with this question but still have not received a response.

Marc

 

Marc,

Tyre companies are sometimes tight lipped with their data for tyres, however they sometimes give out this data if they have it and if your lucky.

Frictional properties of tyres are not as clear cut as static and dynamic friction coefficients. The properties are non-linear and have a 3rd parameter called the tyre slip angle (the other two being normal load and the lateral force).

As an educated guess I'd put the frictional coefficent of such tyres to be in the region of 0.9 - 1.2. If you can work out how many G's you can pull going around a corner or braking/accelerating, that is your (rough!) effective frictional coefficient (example 1.3G = coefficient of 1.3).

If you have any more questions, just give me an email, may be able to help you out.

Jakub Zawada B.E. (Mech)

Product Development
jakub@whiteline.com.au

Go flat out with Whiteline Automotive

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