Winter tires are tires that can offer greater traction for vehicles during the winter season. Winter tires differ from all-season tires and performance tires primarily in their tread depth patterns. Additionally, rubber that is more flexible is used for winter tires so that the tires can properly adapt around snow and ice. 

Not all drivers understand the relationship between viscosity and motor oil. Viscosity levels refer to oil's reactions with temperature. The heat can thin out oil while cold can thicken it, and too much of either is not good for the engine. Additives inside motor oil adjust thickening and thinning to temperatures.