This happened to me last month, hadn’t joined here so didn’t know what it was, really loud squealing. I’ve had stones stuck before on other cars, but never as loud as this. Called the garage where I got it from, they said bring it up (40min journey), I said I wasn’t going to drive it, didn’t know what damage was being done. Cut a long story short, picked up on low loader through BMW assist. Taken to closer BMW dealership, big stone taken out and charged £108. Fast forward a few weeks later and another stone, not as loud as the first one (had just joined here), saw this thread and thought, jees, new car with a hidden design fault, great! Was parked up at work, finished work came out, went into reverse (like suggested on here) didn’t have to it must have dropped out when stationary. Anyway, think I will have to annoy the dealership where I got it from, I aint paying over a hundred pounds each time a stone gets stuck, ridiculous!
Seen a few suggestions for do it yourself, anyone have a sure fire way that doesn’t involve taking the wheel off etc. (would do if really necessary).