Not to pile on ya, RockDoc but I'll also disagree with the added stress theory. Spinning chains don't hook up quickly or well on anything at all so I wouldn't be concerned at all. Dig down to pavement and they're not gonna grip well. Spin 'em on snow or ice and they don't really grab either.
If a drive train can take normal offroading stress (spinning a tire and having it solidly and suddenly hook up on a ledge for instance) it will easily handle the much lower stress of having chains on in ice and snow.
DougM
If a drive train can take normal offroading stress (spinning a tire and having it solidly and suddenly hook up on a ledge for instance) it will easily handle the much lower stress of having chains on in ice and snow.
DougM