I bought some blizzaks mounted on basket-weaves from a 535i owner. Now that I'm pretty sure it's not going to snow again (although, you never know in MN), I need to put my summer RE950s back on. BUT, the basket-weaves look sooooo much better IMO than the bottle-caps. I heard that taking tires off of rims damages the beads? or some tire structure and, hence, why people have separate sets of whole wheels for each season. I am considering having someone swap my summers with the basketweaves and the winters to the bottles....but only if you guys assure me that doing this JUSY ONCE won't cause serious damage to my tires. Thanks.