Thanks guys What's interesting is we've owned 2 previous Toyotas, an 89 CSX Camry that we sold to buy the Aurion - had 460,000kms on the clock and was still going fine, the other is a 95 Camry Vienta Touring which we still have and it has 480,000kms on it and you can't kill it with a stick! BOTH cars didn't do the air pressure thing, neither did the Ford Falcon, the Ford Cortina, the Nissan TRX or the HQ "3 on the tree" Holden we've owned before that. It's just this car and it's when the young bloke winds the window down in the back. Don't think it happens in the front. I was thinking it might be the shape of the car. Seems to be wider in front than the back. Anyway we are pretty much doing as you suggested, winding another window down. Might invest in weather shields. Thanks again for your comments.