Hey, I had a thought: it occurred to me that chains might provide another benefit by effectively increasing the diameter of your tires by about an inch or so when you're chained up. I think this would especially be true for diamond, double diamond, and other patterns that put plenty of steel between the tire and the ground. Possibly not so much for ladder chains.

97 Montero SR: Factory rear locker, 3.5 L 24 Valve V6, ActivTrac 4wd (Love it) , 3 way suspension, four wheel disk brakes, 32x11.50 Pirelli Scorpion ATs