I found a bubble in my front right tire's sidewall on my 2006 Mazda3 2.3L (FWD, open diff). So it needs to be replaced. The replacement tire will end up going on the rear as it's time to rotate them anyway. Will any damage be done by putting the new tire back on the drives in 5,000 miles after the next rotation?
Specifically: Am I going to damage the diff by putting tires with a 20,000 mile wear difference on?