Quote:
Originally Posted by rh71
good time to ask this then - would it be ok to swap in new rears without fronts? My remaining vibration in the rear is likely caused by an out-of-round tire on the right rear. I've got 9k miles on all 4. Would it be alright to swap both those rears out, running old / new like that? They will be Proxes ST II in the rear and ST in the front (discontinued).
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I ran old and new
pairs on our 2001 X5 for most of it's +90k life. Luckily Michelin kept making the exact model that whole time so I never had to face that issue.
Despite recommendations I've read on XS forums, I like to put the new
pair on the front of an X5. The front does most of the cornering and braking (just look at the size of the brake discs). On AWD vehicles the rears are actually the least "used", unless you 'floor it' a lot. What causes the rear tires to wear out faster is the strong negative camber (for better cornering) that produces such much wear on the inside.
Of course you need to take it easy while you break in new tires whether you are replacing all four or just two.
Funf Dreisig