Use these rear carrier on a Combi and had until now no problems, although the site attachment is made directly to the disc. I'm already more easily driven by two wheels 1000 km on holiday and it has come loose nothing during the journey. But you have to put all the straps very carefully. Particularly advantageous seems to me that the main weight is on the bumper. At all fixing points, it comes naturally to paint damage. But I do not care, just before winter comes again paint over it.