Replacing X3 tyres - do they have to be BMW approved?

I need to replace the front tyres on my BMW X3. However, I have been told that the tyres must be BMW approved and within 2mm of each other, otherwise it will cause a strain on the transfer box. Is this correct?


Asked on 10 July 2016 by obelix54

Answered by Honest John
Yes, that is correct. It's true of most four wheel drive cars with automatically clutched four wheel drive and has always been. That's why it's a good idea to swap the tyres front to back, same side, every 5000 miles. Must be same side in case the tyres are directional.
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