II kings 9:20 said:
Kev, is the 4x4 a true snow tire, most have some reference to snow or winter in thier name.
from Tire Rack:
The 4x4 Contact is Continental's Street/Sport Truck All-Season tire designed to make grand touring tire qualities available for sport utility vehicles. Used as original equipment on the Mercedes ML320/500 and Porsche Cayenne S, the 4x4 Contact combines Continental's original ContiTouringContact CH95 style tread design with the large rim diameter sizes appropriate for light trucks.
On the outside, the 4x4 Contact features incorporates Continental's most advanced all-season tire technology. The symmetric tread pattern features large, stable outer tread blocks and three circumferential ribs for directional stability and steering response. Lateral shoulder grooves and four wide circumferential grooves provide efficient water drainage to enhance wet traction. The tread pattern is also heavily siped for good traction in light snow.