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Old 05-07-2010, 03:16 PM
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Default Re: Can you get 37's or 38's on stocke LE wheels

I have to disagree with Hellz on the speedo tuning. You will actually be traveling faster than your speedo reads. reason beeing is that your truck calculates speed by measuring the RPM of the axle. It factors in the circumference of a factory 35"ish tire. So the computer thinks that every revolution should be

35x3.14= 109.9 Inches per revolution. But when you are running 37's you computer does no know that and while it counts revolutions against time to get mph the distance is actually 37x3.14=116.18 Inches Per revolution.

Or you can do it the easy way. Get a gps and set your cruise to 65 on your dash and watch your gps say your doing 69mph. lol
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