FYI Stay away from the Intellavalve aftermarket system. I had it fitted with new tires and it never worked correctly. I had to wait 6 months for the company (PDK Wheels) to replace it and it also proved defective. They were supposed to refund price plus 2 X refitting costs. Took a year to get price less 15%. Both company and product are crap IMHO!

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2021 X5 xDrive40i
2015 X5 xDrive35i MSport
(Traded) 2013 X5 xDrive35i