tire sizes? [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: tire sizes?


IH2388
03-08-2008, 02:52 PM
i have 325/60/18 in my garage and i was wandering what exactly the break down on these numbers were like what the 325 stands for and the 60. i know the 18 is rim size but like im wandering what they represent? thanks

whitehat55
03-08-2008, 03:45 PM
The 325 is the width of the tire, 60 is the height, and as you said 18 is the rim size. I believe the 60 to be a percentage of the width meaning 60% of 325 is the height (195).

whitehat55
03-08-2008, 03:49 PM
Oh sorry, and I forgot an important part. Those measurements are in millimeters.

philtopgun
03-08-2008, 04:34 PM
Each tire company has their own calculation also....... A 285/75 in BFGs are completely different to a 285/75 in a Toyo...