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Old 02-09-2011, 08:22 AM   #25 (permalink)
abell75
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Join Date: Nov 2010
Location: St. Louis
Posts: 38

Grand Prix - '02 Pontiac Grand Prix GP
90 day: 24.01 mpg (US)
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CapriRacer, thanks for getting my head screwed on straight. Now that I think about it more, since the contact patch needs to be the same size for a given load & pressure, a wider tire will have less sidewall deformation. The patch area is WxL; if W is more then L must be less. And I suppose less deformation results in lower RR.

Well written article BTW
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