What is tire ply rating?

Tire ply rating is a specification that indicates the strength and load-carrying capacity of a tire. It reflects the number of layers, or plies, of material used in the tire's construction; higher ply ratings generally indicate a stronger tire capable of supporting heavier loads. Ply ratings are important for determining the appropriate tire for specific vehicles and applications, particularly in commercial and heavy-duty contexts. However, modern tires often use different materials and construction techniques, so ply ratings may not directly correlate with the actual number of plies.