Description
Commercial trailer tires, specifically those used for semi-trailers, flatbeds, tankers, and other heavy-duty trailers, are typically TBR (Truck and Bus Radial) tires designed for high load capacities and durability. These tires are DOT-certified to meet U.S. safety standards, ensuring compliance for highway use. The tire size numbers indicate dimensions such as width, aspect ratio, construction type (radial), and rim diameter, using either metric or imperial formats. Below, I’ll list common commercial trailer tire size numbers, incorporating the sizes from your previous query (11R22.5, 11R24.5, 295/75R22.5, 295/80R22.5, 315/80R22.5, 315/70R22.5, 275/70R22.5, 255/70R22.5) and additional sizes from the provided web results, with explanations of their formats and applications.
Understanding Commercial Trailer Tire Size Numbers
1. Metric Format (e.g., 295/75R22.5):
• First number: Tire width in millimeters (e.g., 295 mm).
• Aspect ratio: Sidewall height as a percentage of the width (e.g., 75%).
• R: Radial construction (standard for commercial trailer tires).
• Last number: Rim diameter in inches (e.g., 22.5 inches).
2. Imperial Format (e.g., 11R22.5):
• First number: Nominal tire width in inches (e.g., 11 inches).
• R: Radial construction.
• Last number: Rim diameter in inches (e.g., 22.5 inches).
3. DOT Certification: All commercial trailer tires in the U.S. must have a DOT marking
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