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Bmw x5 2007 differential ratio confused!!

Posted: Tue Jan 12, 2016 1:42 am
by Sidneyjames
Hi

Garage is saying that the diff on the car is fcuked! Problem I'm having is places I phone are asking what ratio is it...3.15, 3.64, 4.(something!)

How do I know which one I have?

Any help would be appreciated.

Thanks in advance