What does ST on tires stand for?

[OwenRose]

Tire ST refers to trailer tires. Additional information: 1. Trailer tires do not refer to truck trailers, but rather to the practice in European and American countries where private cars often tow an additional vehicle for transporting goods or travel purposes. The ST designation before the tire indicates this type of tire. ST can be considered as an abbreviation for sport-trailer. 2. Pneumatic tires can be further divided into two types based on their construction: tube tires and tubeless tires. Passenger cars commonly use tubeless tires. Based on the arrangement of internal cord layers and cushion layers, tires can also be classified as radial tires or bias-ply tires. Radial tires are widely used in automobiles. 3. Automotive tires can be categorized into pneumatic tires and solid tires based on their carcass structure. Modern vehicles predominantly use pneumatic tires. According to internal air pressure levels, pneumatic tires can be divided into three types: high-pressure tires, low-pressure tires, and ultra-low-pressure tires. Low-pressure tires are commonly used in various vehicles. Pneumatic tires can also be classified into tube tires and tubeless tires based on their construction.