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Re: Wheel and Tire upgrade
Posted by b_thom (more from b_thom) on Mon, 29 Nov 1999 22:51:49
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00

>>length of patch grows proportionately, so the entire patch is roughly
5% longer and 5% wider. This is a 10% increase in contact patch.
Is this analysis reasonable?<<

No. The area of the contact patch is equal to the weight on the tire
divided by the tire pressure. With no change in tire pressure, if you put
on wider tires, the contact patch grows wider, but it also becomes
shorter. As a result, the contact patch area stays the same. Please note
that a car experiencing any change in motion undergoes constant weight
redistribution.
Blair


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