Thread: Hello!!
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Old 05-01-2008, 05:50 PM   #17 (permalink)
xAguy
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Join Date: Apr 2008
Location: Oklahoma
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ThumpinxA - '06 Scion xA
Last 3: 27.21 mpg (US)
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Quote:
Originally Posted by MetroMPG View Post
I meant outer circumference / diameter of the tire compared to stock.

If you're running tires with a larger circumference than stock, your odometer and speedometer will be under-registering. Which will reduce your apparent MPG calculations.

The width is another story! (Rolling resistance & aero penalties.)
Got ya....I had to go bigger though, this this was FUGLY stock! Sittin like a monster truck on 15s!! lmao

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