I recently bought a 2009 BMW X5 from an independent dealer. The car still has 16 months left of warranty. I noticed I was losing air in one of the front tyres, so went to a local garage. He diagnosed a cracked NSF alloy on the inside of the rim. After speaking with BMW assist they suggested that the car be recovered and taken to a local dealership for inspection. I received a call to say they had tested the wheel and it was running 2.5mm out, (BMWs) tolerance allowance is 2.0mm. £720, thank you very much. I pointed out that the car’s tyre pressure warning was not working so could this have caused the cracked wheel? We can't test the pressure sensors until the wheel is fixed £720.00 please. I have collected the car today still with the cracked alloy as I refuse to pay them anything, I was not charged for the recovery, although with it being non warranty I should have been. Am I fighting a losing battle?