[camarojoe]

Covering them is definitely better than not covering them for winter storage, even indoors... Just get a decent breathable cover and you'll be fine. I've always liked the Evolution material as it's nice and thick, but I recently got one made of "Noah" fabric for my hotrod and while its alot thinner, it's supposedly just as water/weatherproof and takes up 1/4 the space when its rolled up and not in use. Regular old cotton is actually fine if its stored indoors... just dont use anything plastic. You'd be amazed how much filth can build up on a car in 6 months when left uncovered, even indoors!