This is crazy i bought my 07 gsa in Nov i checked the rear wheel after reading something on our site about the wheels being out of line laterally and horisontaly it was so bad i have never seen anything like this , i rang the dealership and told them, the answer given was they know they have had problems just bring it back and they would swap it out i did this but thinking all would be fine after they refitted it i rode home and checked it only to find it was worse than the one they had replaced i spoke to them again asking if they had checked it after refitting they said it was intolerance (what F******* tolerance) this was really bad and i also noticed the disc was moving the caliper in and out on its floating pins as well still the same day i rode back and showed them they all agreed along with their technition that not only was not just the wheel out laterally and horisontally but the hub was not machined correctly and the drive unit was not correct aswell. The bike was picked up from my house refitted with a third rear wheel ,new disc, pads and final drive unit and returned a day latter (yesterday). On my inspection i was amazed that the wheel ,new disc and rear unit were as bad as before all of this has been definately swapped out as i had marked the items of change .I instantly called the dealership .They said that although they had carried out the work they were not satisfied with the items fitted and know exactly what i was upset with , i said how can anything this bad get through quality control and become fitted the bike they didnt know they aknowledged there is a problem with many 07 final drives and hub/wheel assemblies i said go to the show room and check an 08 model they said they had and it was as bad and they had submitted a PUMA fault thingy to BMW headquarters and my problem will be dealt with asap, i will wait and see. So i think all of us should check our rear wheels and hubs because they will deal with it but it seems its not just us 07s but 08s as well.. Good Luck!