Tires that were operated while flat, even for a short distance, must be demounted and inspected for internal damage. Never reinflate such tires without first inspecting them internally. Excessive Spinning Excessive wheel spinning, when freeing a vehicle from sand, mud, snow, gravel, ice or wet surfaces, can result in explosive tire failure, causing serious personal injury or vehicle damage. Never stand near, or behind, a tire spinning at high speeds when attempting to push a vehicle that is stuck. Operating any vehicle in excess of lawful speed limits, or the maximum speeds justified by the driving conditions, can be dangerous.
Excessive speed creates heat buildup in a tire, leading to possible tire failure.
The letter indicates the maximum speed capability of the tire when properly loaded and inflated. However, even when tires are properly loaded and inflated, driving for prolonged periods at high speeds can cause tire damage and possibly tire failure, which could lead to an accident. Original Equipment speed-rated tires must be replaced with tires of the same or higher speed rating if the speed capability of the vehicle is to be maintained.