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					Originally Posted by audiophool  Not sure I agree with that. Cables or chains are great for helping stop on ice and snow, especially with ABS - for the same reason as they work during acceleration. Cornering? Maybe not so much better due to the orientation of the cables/chains across the tire face. Still better than A/S tires bare. |  Cables or chains on the rear wheels  will not help you corner or stop.  OK, they will help a little with stopping, for the 20% of the braking that the rears provide.  But they will actually make cornering worse since they will increase under steer.  The OP only asked about the rears, and BMW recommend not putting them on the fronts.
 
If you can fit them on four wheels (BMW is likely worried about clearance behind, not in front) then they could help.  But it is still all a bad idea IMO.
		 
				__________________2007 X3 3.0si, 6 MT, Premium, White
 
 Retired:
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 2002 325xi 5 MT, Steel Grey
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