CHECKING THE GRIP OF YOUR TYRES ON SNOW
When it is safe to do so, at a safe speed, and, make sure that no one is close behind you, apply the brakes firmly until the wheels lock up and the ABS is activated. Keep the brake pedal pressed down until the vehicle stops completely. This will give you a clear indication of the grip available at that particular point in time. You can repeat this test to continually monitor grip in different conditions.