Hi all you BMW drivers out there.

So I have made the exchange from driving VWs to BMWs and so far I am loving it. However I am very picky and I have noticed (just from admiring the car for hours) that the bumpers are dropping slightly when they reach the wheel arch. On closer inspection there is a factory grove in the plastic on the bumper edge but nothing connecting it to the vehicle. There isn't a slot opposite on the vehicle body for anything to attach too? So I am confused.

Has any one experienced this minor problem and do you have a quick fix for a fellow BMW driver.

Thank you muchly,