Tire Sizes
Thread Starter
2nd Gear Member
Joined: Mar 2006
Posts: 263
From: Sunnyvale, California
Tire Sizes
Can someone explain the 3 measurements of tire sizes (or give a link to some helpful info)? I wanna get new tires for my Mustang, but I don't know what all the measurements are...
3rd Gear Member
Joined: Feb 2005
Posts: 646
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RE: Tire Sizes
First number is section width in millimeters. The second is the section ratio, which is how many % the sidewall is of the section. 3rd is the rim size.
I use THIS calc alot, it will help show you how the number affects the size, and how to keep the same diameter tire when going wider, as not to mess up the speedo.
I use THIS calc alot, it will help show you how the number affects the size, and how to keep the same diameter tire when going wider, as not to mess up the speedo.
3rd Gear Member
Joined: Jul 2004
Posts: 823
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