spare tire too big?
#1
spare tire too big?
I have 235/45/17 all around and now have a spare 225/55/16 on the rear, circumferences are 79.54in for the 235, and 80.86 for the 225. Is this enough of a difference to damage the diff? I have already went around 40mi, and will not have the replacement tire for a few days. The tires are basically new so replacing one should not be a problem, just need to know if I should stop driving now. When i first put the spare on, there was a sound like grinding brakes under 20mph coming from the rear, but it magically went away by itself, hopefully that wasn't the diff already being destroyed.
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