My 650 coupe has been into the dealership 12 x in 16 months . run flat tires, low profile tires pot holes . End of story 8 replacement tires, 3 rims and hours spent in the dealership . BEWARE LOW PROFILE TIRES ON THE 650 . All my friends have had similar problems . I have spent days at the dealer waiting for my car. I would never buy a bmw again