94502,

I hear what you say about the manual and tire size. The manual also tells you to use only 'BMW' chains :-) I'm sure your local dealer can quote a price !

I suspect the manual is considering ye olde chain-link style chains in this advice.

I have used the ZT735 on the rear of 4.4 non-sport (255/55/18). Works just fine, the ZT chains are S class clearance and more of a chain->cable hybrid. I would'nt try them on the front tho'.

IMHO the Z-chains are a very useful addition on ski trips with all weather Michies on the wheels. No manner of DSC or X-drive can defy the laws of physics, Cap'n.

And remember - on loose snow/sand, turn off that DSC.

Usage scenario illustrated below. A few hours after this photo I was roaring thr' Death Valley - just a 'tad warmer.

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