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Old 02-17-2014, 10:18 PM
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brandonjansen brandonjansen is offline
Lifted Cummins Fanatic

 
Join Date: Feb 2013
Location: Abbotsford, BC, Canada
Age: 23
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Vehicle: 2012 Dodge Ram 3500 CCSB 4x4
Trim Level: Laramie Limited
Color: Mineral Grey Metallic
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Quote:
Originally Posted by SShadow1974 View Post
Ok, I am confused. How can one go from a 285/75R17 to a 315/70R17 and gain a .8" in height? Isn't the 75 and 70 the sidewall of the tire? Wouldn't that mean a smaller tire diameter? *confused*
Yes the second number does tell you the sidewall height of the tire, but it's a ratio of the tread width, not a hard measurement number. Check out the Guide to Leveling & Wheel and Tire Sizing linked in my signature, it explains how to calculate the total height of a tire.
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