OEM Trailer Hitch

[xsx450]

Originally Posted by TerminatorX5

where is the bottom arm bolted to? It is not clear from the pictures posted earlier on this thread.

It is bolted to the subframe of the x5 There is an extremely heavy duty box frame that runs right behind the rear differential which you drill a hole into and then use a special bolt which expands when you torque it the first time like a pop rivet and then you retorque it with a 1/2" Bolt.

Any downward force would be transfered very evenly with the mount. I believe the shear strength of the bolts does matter, unless you think the rear frame is going to rip off?

[TerminatorX5]

Originally Posted by xsx450

It is bolted to the subframe of the x5 There is an extremely heavy duty box frame that runs right behind the rear differential which you drill a hole into and then use a special bolt which expands when you torque it the first time like a pop rivet and then you retorque it with a 1/2" Bolt.

Any downward force would be transfered very evenly with the mount. I believe the shear strength of the bolts does matter, unless you think the rear frame is going to rip off?

sounds like a "Jesus" bolt... Interesting, a frame that is behind rear diff... i wonder, what the purpose of it there... i need to pull out some of the blueprints, see what it does...