I’ve never had an issue with the pano roof fully open at speed, believe me I’ve tested it out lol. But my and my friend were really surprised/impressed how little disturbance there is , same goes for the windows
the only reason I’ve closed the roof ( when the weather actually permitted me opening it ) was my fear of a bird doing a shit on it or a wasp flying in ?? , but it’s a great bonus to have , even if you park up somewhere , take in the vista and let loads of light and fresh air in ??
in my previous 2 cars both Audi Q3, if you went more then 20mph and opened a window I would liken it to Chinese Water Torture ( never had that obv. ) but it was horrendous , felt like your ear drums were getting sucked out
it’s very much different in the Tiguan, so fear not you’ll be able to have the windows open get a taxi driver tan and let that wind blow through your hai….. beard ???