I have a 2001 325i sedan with 40,000 miles. The car is a premium package car with the 16 inch wheels and conti tires. The tires were replaced at about 30,000 miles. Recently I began to notice a noise which seemed to come from the rear of the car. It kinda of sounded like a wheel bearing noise. Anyways the dealer said the noise is from the tires. He said the tires are wearing in a cup pattern. He also said that I have two bent rims and that this is probably the reason why. The rims however do balance. He said I need to replace all four tires and rims to fix the problem. I kinda of think it is probably a wheel alignment issue. What should I do?? Has anyone else had this type of problem.