I fit, and originally positioned, the Grand Aero with the door mirrors folded - that way I know they'll fold back in without hitting/touching the window glass. Mine are very tight but no sign of damage to the plastic. I have found that with a 2.3m wide caravan (7'6" wide travel trailer) that the passenger mirror needs the extended arm rather than the standard arm - with even wider caravans (travel trailers) both sides would need the extended arms - I don't know which arm comes as standard in specific markets.I have a pair of Milenco's which worked well my Nissan Patrol. I've tried sizing them up against the Touareg and the clamps come into contact with the mirror glass and I'm also worried that if I over-tighten them I'll damage the plastic mirror surround.
Has anybody had any issues with this style of mirror causing damage?