06-30-2009, 11:28 AM
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#6 (permalink)
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A True Z Fanatic
Join Date: Jan 2009
Location: Chattanooga, TN
Posts: 1,344
Drives: 13' MB 370z
Rep Power: 30950
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Quote:
Originally Posted by jginnane
Both. Grippier and quicker to wear out.
One person posting on tirerack said that as a very general rule of thumb, ASSuming you're a typical daily driver, have good roads, etc etc ... then, if you multiply the number by 72 you'll have a very rough approximation of the life of the tire under optimal conditions.
So 140 x 72 means you'll be replacing these OEM treads at roughly 10K miles, give or take a couple thousand.
Also -- since our tires don't rotate, it's much more important to have good alignment and balance.
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Where does this 72 come from?
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