Grr, the Z chains I bought for my car don't actually fit my wheels (I did a test fit last night).
First they will be a real bitch to install (very little clearance, my arm doesn't really fit between the tire and the wheel well. Fun to install the chain in the back (you can't turn the wheel).
Not that you really care, so long story short, I ordered larger chains today, some that will actually fit, but I'm pissed because I really would have driven to Tahoe tonight to get the great powder that fell yesterday and today, and now I have no way to get there, so I'm just going to work like a loser tomorrow...