Originally Posted by Dirsuper
Hell, most people let air out of their tires when going off road (in soft stuff, lots of that here in SoCal), so the tire pressure thing, while a good point, does not provide a viable excuse in my mind.
People air down offroad-oriented tires (which typically have stiffer sidewalls), and if it's a big bike, they usually only go down to 22psi or so. If your mostly-street tires were at too low a pressure and you hit some sort of sharp edge offroad, you really can't blame BMW for the rims bending. You can get pissed off at the dealer for not properly inflating the tires, but even then, it's incumbent upon the rider to check his bike prior to riding it -- especially in rougher conditions.