Morning to all.

I have two identical sets of wheels / tyres for my E70. Both are:- rear 315 35 20 & front 275 40 20.
If I carry one of the 275 40 20's with me as a spare on a long journey, will it fit OK on the rear if required as well as the front? Any offset problems etc.?

Thanks in advance.

Rik

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2008 BMW X5 3.0sd SE