Had to change a flat tire the other day. Found that the rim had rusted itself solidly onto the hub. Took off all the lugnuts and the wheel *would not* come off. Knocked the car right off the jack twice kicking at the stuck rim. After I finally got that cute little spare on I went down to my mechanics. He said steel + aluminium + salt = yes they get stuck. I had them pull every tire and apply Never-seize between the hub and rim on all of them. Hopefully they'll come off without power tools if I need to change another tire.