Resistance to hydroplaning. This dangerous phenomenon can occur in wet weather. A layer of water builds up under the front tires, lifting them off the pavement and making them skate like a hydrofoil, eliminating steering control. The speed at which this group of tires began to hydroplane ranged from 42.5 to 49 mph. On our ride course, we checked how well the tires absorbed flaws in the pavement.
Some tires generate more rumble, sizzle, or slap.
Traction on loose and hard-packed snow. Some could start easily and climb a mild incline. Others bogged down almost immediately. In fact, the manufacturer's mileage warranty may be a more dependable barometer of tire life than the tread-wear rating. When it comes to collecting on that warranty, however, the payoff may be as thin as the air in the tire.