If you drive a lot of miles with the top stowed or park it with the top stowed some people have experienced the developement of two lines in the top.

Kinda permanent creases. They will traverse the top right to left. One will appear above the rear window about an inch from the frame spar. The other will appear at the next forward frame spar.
The will be about 16" or, since this is a German car about 1/2 of a meter.

I saw this on two Southern California cars I looked at when searching for my Crossie. From having the top dwwn all the time. my guess is it is not storage so much as road vibration with the top down all the time.

Not all cars develope this. Ragtop treated tops and those treated with 303 top cleaner seem to avoid it. But I used ragtop and they have developed on mine. Both the CA cars were 2006's,as is mine. But that may or may not mean a thing.

Use of the rag top Cleaner generally removes the crease, at least the apperance of it.

Flexing the top frequently is a good idea. Lube the cables once a year. I use a dry teflon spray.

Some may remember the original K car convertables. Many were left down all the summer, parked inthegarage like a queen. So when people put them up in the fall they all cracked, exactly the same and exactly in the same place. right above the first frame spar at the rear window, on each side of th ecar where the 90 degree elbow of the frame put the most stress on it. Hardly ever saw one of those cars without that crack.

Or duct tape over it.


roadster with a stick