Go to your local BMW dealer’s parts dept. and ask for a tube of GUMMI PHLEGE. It is a silicone based lubricant that comes in a green tube. It will thouroughly condition your seals and bring them back to a “like-new” state.
The tube has an applicator tip which makes it really easy to apply.
Well I cant speak for the windows on the Teg just yet because I just did my first application. What I can tell you is that the the rear hatch seal on my CRX never leaked again for three years after 1 application.
dam, how the hell did you find out about gummi pfledge? I thought it was a BMW technicians secret… ya, it works wonders! I use it often at work (BMW technician) on pita customers cars when they complain about window rattles or squeaks, it can stop noise and it keeps the rubber soft and pliable. one tube will last a long time!!