I thought my ZSP car was pretty bumpy after picking it up, but after putting some mileage on the car, the ride seems to be getting a lot better. I have a E60 530i ZSP with Run-Flats and the ride seems to get better with age!
My E90 had balance problems and they rebalanced all four tires free of charge. My alignment was also off and veering to the right. Have your dealer look at your car as soon as possible since alignment and balance issues are only covered for the first 2 months or 2000 miles.
-Chris
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