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Old 03-31-2008, 12:50 AM   #18 (permalink)
trebuchet03
MechE
 
Join Date: Dec 2007
Location: Bay Area
Posts: 1,151

The Miata - '01 Mazda MX-5 Miata
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Quote:
Originally Posted by metroschultz View Post
OEM = taller, wider, more contact patch
Donut = shorter [slightly], narrower, less contact patch, and they present a round face to the wind.
Contact patch doesn't change

The only things that will change contact patch is a change in vehicle weight or a change in tire pressure.

Wider tires will have a wider patch (left-right) but will be thinner (front-back).

Skinnier tires will have a skinnier patch (left-right) but will be thicker (front-back)
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