The lettering and numbers on the sidewall of a vehicle’s tires indicate size and also give information about the tire’s purpose. The “P” at the start denotes the type of vehicle the tire is intended for.
Identification – The “P” stands for “P-metric” and means the tire is intended for vehicles primarily used as passenger vehicles.
Vehicle Types – Vehicles that a P-metric tire would be used on include cars, station wagons, sport utility vehicles and minivans. Light duty pickup trucks with a 1/4-ton and 1/2-ton load capacity are also included.
Considerations – P-metric tires, the most frequently used type as of 2010, were first introduced in the United States in the late 1970s. The load capacity of P-metric tires is based on a formula which takes into account the physical size and amount of air pressure of the tires.