AndyTo you need to pick a camp. Runflats on one axle and non-runflats on the other is not compatible with xDrive and can result in winding up and expensive damage to the transfer case.
If you're changing to proper non-runflat tyres on a xDrive car we recommend Michelin Pilot Sport 4S (not 4) or Conti SportContact6 in the standard sizes. Both of these have less than 1% difference in rolling circumference front to back, which is a requirement of xDrive.
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