I thought I would share this information on what can happen on mis-match tires on a 4x4.
A diesel 4x4 truck came in today on the hook with a catastrophic transfer case failure.
The truck had near new tires on the front while the back tires were bald. The front tires were spinning slower than the rear due to the tread depth difference front to rear.
The torsional wind up stress on the transfer case had to be tremendous. When the nose of the case broke off the front driveshaft almost went through the drivers floor board. I can't imagine what that would have sounded or felt like!
Good example of how important on a 4x4 that all tires are the same circumference.
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