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Any hitch will apply a bending (twisting) moment to the receiver, based on the trailer tongue weight and the dynamic loads caused by accelerating and braking.
If you are buying an alternate hitch (drawbar) to that sold by BMW, you should be aware of the BMW specs for that hitch. The BMW spec for the ball location is no more than 8" horizontally from the pin that the hitch drawbar is secured to the receiver with. There is a limit of 12" vertically from the top of the receiver to the base of the hitch ball.
Exceeding those specifications (ie more vertical drop, or more horizontal extension) will stress the receiver beyond what it was designed for. I am not suggesting that you cannot go over those limits for very light trailers, but you do so at your own risk.
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2007 X3 3.0si, 6 MT, Premium, White
Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
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07-21-2009, 08:31 PM
Threaded Mode
