by unixnerd on Tue Mar 09, 2010 3:16 pm
I have a cover we got on ebay for the e28, works fine and no condensation. Trick is to make sure you only ever put it on a perfectly dry car, even better if it's left in an area that gets some sunlight (unlike ours).
As for a waterproofing product I've no idea, never had a cabrio. We don't get the weather for them in the Highlands. It's mid March and there are still piles of snow in the driveway!