I'm thinking of getting the Pirelli P Zero - seems a bit cheaper. Any particular reason why you guys choose the MPSS over any other tyre? I assume that as long as I am using the tyres of the exact dimensions as the originals that it shouldn't invalidate the AUC warranty right? I spoke to the service adviser the other day and he said it is fine but he didn't make it clear if I can only use the "BMW approved and tested" tyres. He side something about a star - any ideas?
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