Impact of Tires on Safety
All steering, braking and accelerating forces between a vehicle and the road are mediated by the tires. The tires are the most active safety equipment of your car - your car is kept on the road and you in control of your car by four contact areas the size of your palm.
The role of the tires in the safety of a car is especially pronounced under demanding and quickly-changing conditions: on snow or ice, on a wet road or in surprising situations.
Proper tread and tire pressure is vital to the functionality of tires. When tires wear out, the tires' wet grip and aquaplaning properties essentially deteriorate, and the risk of accidents increases. Tires lacking sufficient pressure make controlling the car under extreme situations more difficult and allow for the steering to pull more to the side; insufficient tire pressure may even cause a blow-out.
The demanding conditions of the north require much from tires. The tire must retain its grip on the road even under wretched weather conditions. Road surface friction in the wintertime varies between the fraction coefficient 0.1 for wet ice to the coefficient of almost one for dry roads. In addition to absolute grip, the correct relation between lateral and longitudinal grip ensures good anticipatory properties and steering response even in a blizzard or watery slush.