Quote:
Originally Posted by foxpaws
If it is AWD you will need to replace all 4 tires - you can damage the center diff if you don't. You could shave them to match the diameter of the old tires - but, that is still sort of iffy. 2WD and 4WD are usually OK with only 2 tires being replaced.
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Passing on the words of a tire salesman, eh? Those guys gave up careers in rocket surgery to save the center diffs, right?
IOW, If that were true, every truck, with a heavy engine over the (lower pressure) front tires and little weight over the rears would be grenading center diff's.
IOW 2, the effective radius, due to tire pressure, varies more than a 32nd of wear . . .and still center diffs handle it with ease. If that scares you, do NOT do the math on difference in radii of going around corners - else you'll never steer again.
Bottom line: put the new ones on (I would put them up front) and move on.
Edit: So, yes, HD, you are smart to consider that the tech might have been full of baloney.