I've got to get another pair of studded tires to equip the entire family. Has anybody had experience with Schwalbe studded tires? How about the size? Do they go onto a 700c rim, tight or loose?

A friend of mine just had a bad experience with a Schwalbe tire that was so loose it blew off his rim, and it might have been a one-time manufacturing issue, but I'd like to know if this is something I actually need to worry about.