I have the Aero Platinum MIL 6606, regular size not Grand on a CR. I've only done a coupe of short trips, but the mounting has been solid, the regular mirrors are big enough and with the width of the Touareg, I have the Milencos tucked in close to the vehicle mirror and have the required field of view (ie the arms are more than long enough). The regular mirrors are close in effective size to the large Coast door mount mirrors I had on my Fairlane, so I didn't choose the Grand as I wanted to keep the load on my vehicle mirrors as low as feasible. Having mounted and used them I think I needn't have been concerned about minimising size and weigh, but I doubt I'll change to the Grand size.