These specifications describe a common size of commercial truck tire. The numbers represent specific dimensions: 295 millimeters refers to the tire’s width, 75 indicates the aspect ratio (the ratio of the tire’s sidewall height to its width), R denotes radial construction, and 22.5 signifies the rim diameter in inches. This size is frequently found on drive axles, which power the vehicle, and are essential for traction, handling, and load-bearing capacity.
Selecting appropriate tires for heavy vehicles ensures optimal performance and safety. Properly sized tires contribute to fuel efficiency by minimizing rolling resistance. They also influence braking performance and overall handling characteristics, crucial factors for driver and public safety. The development of radial tire technology, recognizable by the “R” designation, significantly improved tire lifespan, load capacity, and fuel economy compared to earlier bias-ply constructions. This advancement marked a turning point in the trucking industry, allowing for heavier loads and longer hauls.
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