Just had a call from my loacal BMW service department, apparently two wheels on my 320d are buckled, front left and rear right. Luckly they have agreed to replace these free of charge. I've only owned the car two days! Oh and a puncture too. My question, has anyone else experienced a buckled wheel, 18" alloys in paticular? How easy are they to damage? Obviously I'm now a little aprehensive, especially on our perfect pothole free UK roads, ha ha! Cheers!