Quote:
Originally Posted by Frank Lee
I measured contact patch at various pressures and it didn't correlate well at all.
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Frank, Did you publish your results?
Also, Frank is right. The idea that you can calculate the size of a tire's contact patch knowing the load and the tire pressure is incorrect. Also, a wider tire has a slightly larger footprint than a narrower tires - all other things being equal.
There used to be a webpage called "Fact or Fiction" that had data from Avon tires that proved this point, but that web page has disappeared. You can find other studies that have the data, but you have to wade through a lot of other data, because that is usually NOT the point of the study.
Update: I found an archived version here:
https://web.archive.org/web/20090225...on-tires-1.htm