It all started, doctor, when I was in the garage waiting for my wife to come out. There was a tape measure lying out, so on a whim I decided to measure the diameter of my tires. And they measured ... drum roll ... 29 inches. WTF? So I measured again more carefully and decided it was more like 29 1/4.

The nominal diameter of those tires when they were new was 30.5" with a tread depth of 16/32 = 13 mm. That's probably on a 7" rim and I have an 8" rim.

The tires don't measure the same horizontally as they do vertically, and the wear isn't completely even. But the diameter is about 29 1/4" and the axle center sits around 14 1/2" off the ground.

The tread depth of the more worn tires is about 10/32" = 8 mm. That's a wear loss of 6/32, which would be a 6/16 = 3/8" change of diameter. That would explain a 30" diameter, but not 29 1/4".

Am I missing something? I checked and double checked the sidewall labels. No surprises there. Surely 8" rims don't make that much of a difference?

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2003 Liberty, ARB bumper w fogs and KC SlimLites
Front Franky II HD, rear OME948 w Rancho RS9000/XL shocks
LT245/75R16C Duratracs on Moabs
4.10 gears, front & rear ARB lockers, Boulder Bars, AFE Stage 2 intake
Surco rack w BajaRack jerry can holder
Cobra 75 WX ST

06 LJ Rubi, 3.5" RE SA and 33" BFG KM2s, GenRight tank

you got the weight of the vehicle on the ground so measuring vertically will make them shorter then measuring horizontally. youre suppose to measure them horizontally. most of the tires out there dont measure to the exact size anyway. theyre all a little different. next time just get bigger tires.

Rim width will change it a small amount also

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