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Old 12-14-2009, 08:20 AM   #8 (permalink)
CapriRacer
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Quote:
Originally Posted by orange4boy View Post
1) Unfortunately, had they done a little research, they would have found this:

Fact or Fiction? Tire contact patch and air pressure.

That directly contradicts Item #1 - and has data to back it up. So it isn't a myth!

2) In item #2, they go with the classic friction formula F = µN. Unfortunately, that does not apply to tires.

Tires get a lot of their grip by penetrating the macro texture of the pavement. When pushed to an extreme, the rubber is torn off the tire - with subsequent increases in force. As a result, it is possible to get more than 1g forces.

If you read up about drag racing, you''ll find reports of well in excess of 1 g acceleration. You'll also find some skid pad testing over 1 g of regular production cars - albeit high performance cars like Corvettes.

So, the whole article seems built on an incorrect series of assumptions.
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