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Old 06-12-2008, 11:46 PM   #21 (permalink)
vtec-e
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Hi Frank,

Thats a good test alright. I suppse it's a given that the contact patch gets smaller at higher pressures but its surprising that you encountered a rounder patch. This happened below sidewall pressure right? Anyway, i was searching for info on contact patch size vs traction and found this: www.stevemunden.com/friction.html
He is mostly talking about bike tires but also refers to car tires. I think it's conclusive enough evidence for me that traction doesn't decrease with higher pressures/ smaller contact patch. So, getting back to Brucepick's experiment, i'm looking forward to seeing how the real world results correlate to physics theory.

ollie

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