We used to get the same thing on the 11.00-20 tires used on the MLVW fleet back when we used bias ply tires. The Firestone and Goodyears were close enough that we could interchange them, but then General tires started to show up which were skinnier and significantly taller. A message came out that the Generals were not to be mixed with the other tires, and that in the future the tires would be sole-sourced to one manufacturer only (not General).
We had the same thing with the old 5/4 ton.....Goodyears and then someone bought a bunch of Cooper super traction. The 5/4 ton was especially picky about tire diameters and pressures. If the stresses built on the powertrain, the transfer case would not kick out of "loc" and eventually the front diff (weakest link) would boil the oil out of it.
It is very important on an allwheel drive vehicle that tire circumferences are the same.
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05-12-17, 20:54
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