BMW X1 TOWBAR

I`ve had both detachable and now an electric retractable (factory fit) and much prefer the retractable. Made by Bosal with an intergrated 13pin connection simply swings out at the touch of a button. Have`nt had any problems though I tend not to swing it in on the continental trips just in case! The detachable  (Westfalia) was OK but a little fiddly and was quite heavy to lock up which involved a certain amount of kneeling,  it was however solid with no movement, one difference was the ball rusted and the Bosal does not.  

I have the Bosal detatchable, the electrics swing out of the way. As Tigi says there is a certain amount of kneeling requred, (the detatchable part is surprisingly heavy) otherwise its perfectly satisfactory.

I'm going for a detachable witter. Its being fitted on Friday