Originally Posted by roddy1
thay also measure them un mounted... a 5000lb truck compresses a tire pretty good. If your sticking a tape measure next to your tire.. that isnt going to be accurate.
Tire companys webpages list the wheel width that should be used with a particular size tire.....usually if multiples are shown, the bold print is the one they used to show you measurements such as tire height and tread width.
For Example... BFG lists the 35x12.50r15 tires on a 10" rim, measures 34.8" tall and 12.50" tread width on a 10" rim..
At least thats how I understand it.