[NFSBMW]

Anyone else with an X6M having the same problem? After even short journeys on gravel roads or even normal roads which have had recent roadworks, my car is getting "sandblasted" along the rear sills (just ahead of the rear wheels and below the rear doors). Also some stone damage on lower part of rear doors too.
BMW Australia were actually really good and agreed to repaint rear sills and rear doors and fit front mudflaps - as everyone believed the problem was due to the wide front tires throwing stones back down the car, which has body-coloured sills, unlike the normal X6 which has black plastic-covered sills and steps.
However the stone damage is still occurring despite the new front mudflaps.
Seems the solution is either clear film over the sills and rear doors or fit the "sports step" side boards from the X6 and hope their width stops more stone damage.
Pretty disappointing design flaw from the M team and let's face it, this is a 4WD that should be able to cope with very mild rough roads.
Advice most welcome. Nigel, MY10 Monte Carlo Blue X6M, Australia