TBR Tire Sizes for Commercial Trucks

Truck tires, specifically TBR (Truck and Bus Radial) tires, are designed for heavy-duty commercial vehicles such as semi-trucks, dump trucks, buses, and trailers. These tires are DOT-certified to meet U.S. Department of Transportation safety standards for highway use. The tire size numbers indicate dimensions like width, aspect ratio, construction type (radial), and rim diameter, using metric or imperial formats. Below, I’ll provide a comprehensive list of common DOT-certified truck 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 adding others from web results (e.g., www.tnr-international.com, www.fourdtyre.com, www.continental-tires.com). The list will cover tires for various axle positions (steer, drive, trailer, all-position) used in heavy-duty trucks, with a focus on their applications.

Understanding Truck 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 TBR 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).

•  Older sizes may include “.00” (e.g., 10.00R20), implying a high aspect ratio (close to 100%).

3.  DOT Certification: All truck tires in the U.S. must have a “DOT” marking on the sidewall, confirming compliance with NHTSA safety standards for load, pressure, and tread durability. The size is part of the Tire Identification Number (TIN), which includes manufacturing details (e.g., date code like 4025 for the 40th week of 2025).

Common Truck Tire Size Numbers

Below are common DOT-certified TBR tire sizes used for heavy-duty trucks, covering steer, drive, trailer, and all-position applications. The list includes sizes from your query and additional sizes from web results, organized by format and noting their typical axle applications.

Metric TBR Sizes

These are widely used for modern heavy-duty trucks:

•  205/75R17.5: Light-duty trucks or buses, often all-position or steer (e.g., regional delivery).

•  215/75R17.5: Light-duty trucks, used for steer or all-position (e.g., ~3,860 lbs at 112 psi, load range F).

•  235/75R17.5: Medium-duty trucks, steer or all-position (e.g., ~4,410 lbs at 125 psi).

•  245/70R19.5: Regional trucks, steer or all-position (e.g., ~4,940 lbs at 120 psi).

•  255/70R22.5 (from your query): Narrow, low-profile, used for steer or all-position in lighter trucks (e.g., ~5,070 lbs single, ~4,675 lbs dual at 120 psi, load range H).

•  275/70R22.5 (from your query): Narrower, low-profile, used for steer, drive, or all-position in regional trucks (e.g., ~6,940 lbs at 130 psi).

•  295/75R22.5 (from your query): Standard for long-haul trucks, used for steer, drive, or trailer (e.g., ~6,175 lbs single, ~5,675 lbs dual at 110 psi, load range G).

•  295/80R22.5 (from your query): Taller sidewall, used for steer, drive, or trailer in heavy-duty trucks (e.g., ~7,830 lbs at 123 psi).

•  315/70R22.5 (from your query): Low-profile, wider, used for drive or steer in heavy-duty trucks (e.g., ~8,000 lbs at 130 psi).

•  315/80R22.5 (from your query): Wider, high load capacity, used for steer or drive in heavy-duty trucks (e.g., ~9,090 lbs at 130 psi, load range L).

•  385/65R22.5: Wide-base (super-single), used for steer or trailer in heavy-duty trucks (e.g., ~10,200 lbs at 120 psi).

•  425/65R22.5: Wide-base, high load capacity for steer or trailer (e.g., ~11,400 lbs at 120 psi).

•  445/50R22.5: Super-single, low-profile, used for fuel-efficient steer or trailer (e.g., ~10,200 lbs).

•  445/65R22.5: Wide-base, maximum load capacity for heavy-duty steer or trailer (e.g., ~12,300 lbs).

Imperial TBR Sizes

These are common for traditional or heavy-duty truck applications:

•  8.25R15: Older, smaller trucks, all-position or steer (tube-type).

•  8.25R16LT: Light-duty trucks, all-position (tube-type).

•  9.00R20: Heavy-duty trucks, used for steer, drive, or all-position in off-road or construction (e.g., ~6,680 lbs, tube-type).

•  10.00R20: Heavy-duty trucks, steer or drive, often off-road (e.g., ~7,400 lbs, tube-type).

•  11.00R20: Heavy-duty trucks, drive or steer in rugged conditions (e.g., ~8,050 lbs, tube-type).

•  12.00R20: Heavy-duty trucks, drive or all-position for off-road (e.g., ~8,820 lbs).

•  12.00R24: Larger rim, drive or all-position for off-road or construction trucks.

•  10R17.5: Smaller heavy-duty trucks, steer or all-position.

•  10R22.5: Medium-duty trucks, steer or drive.

•  11R22.5 (from your query): Standard for long-haul trucks, used for steer, drive, or trailer (e.g., ~6,175 lbs single, ~5,675 lbs dual at 105 psi, load range G).

•  11R24.5 (from your query): Taller profile, used for drive or trailer in heavy-duty trucks (e.g., ~6,610 lbs at 105 psi).

•  12R22.5: Wider, used for steer or drive in heavy-duty regional or off-road trucks.

•  13R22.5: Maximum width for drive or all-position in extreme applications (e.g., mining, logging).

Key Characteristics and Applications

•  Axle Positions:

•  Steer Axles: Sizes like 295/75R22.5, 315/80R22.5, 11R22.5, and 385/65R22.5 are common for steering due to their stability and ribbed tread patterns.

•  Drive Axles: 11R22.5, 11R24.5, 295/75R22.5, 295/80R22.5, 315/70R22.5, and 315/80R22.5 are widely used for drive axles with aggressive lug or block treads for traction.

•  Trailer Axles: 295/75R22.5, 11R22.5, 11R24.5, and wide-base sizes like 385/65R22.5 or 445/50R22.5 are common for trailers, prioritizing low rolling resistance.

•  All-Position: 275/70R22.5, 255/70R22.5, and smaller sizes like 215/75R17.5 are versatile for regional or lighter trucks.

•  Load Capacity: Varies by load range (e.g., G, H, J, L):

•  11R22.5 (Load Range G): ~6,175 lbs single, ~5,675 lbs dual at 105 psi.

•  315/80R22.5 (Load Range L): ~10,000 lbs at 130 psi.

•  425/65R22.5 (Load Range L): ~11,400 lbs at 120 psi.

•  Applications:

•  Long-Haul: 11R22.5, 295/75R22.5, 315/70R22.5 for semi-trucks on highways.

•  Regional: 295/80R22.5, 315/80R22.5 for mixed conditions.

•  Off-Road/Construction: 12.00R20, 11R24.5, 13R22.5 for dump trucks, logging, or mining.

•  Tube vs. Tubeless: Sizes like 9.00R20 or 10.00R20 are often tube-type for older or off-road trucks, while 295/75R22.5 or 315/80R22.5 are typically tubeless for modern applications.

•  DOT Compliance: The “DOT” marking ensures compliance with NHTSA standards for safety, load, and tread durability.

Notes on Your Query Sizes

All sizes from your query (11R22.5, 11R24.5, 295/75R22.5, 295/80R22.5, 315/80R22.5, 315/70R22.5, 275/70R22.5, 255/70R22.5) are commonly used for heavy-duty trucks:

•  11R22.5, 11R24.5, 295/75R22.5, 295/80R22.5, 315/70R22.5, 315/80R22.5: Standard for steer, drive, or trailer axles in long-haul or regional trucks, with high load capacities and versatile tread patterns.

•  275/70R22.5, 255/70R22.5: More common for steer or all-position in lighter or regional trucks, but can be used for drive axles in specific applications (e.g., lighter loads or car haulers).

Sources for Further Details

•  Manufacturer Websites: Bridgestone (commercial.bridgestone.com), Michelin (business.michelinman.com), Goodyear (www.goodyeartrucktires.com), and Continental (www.continental-tires.com) provide size charts, often as PDFs.

•  Retailers: Discount Tire (www.discounttire.com), Forlander (www.forlander.com), or Alibaba list truck tire sizes and specifications, sometimes with downloadable catalogs.

•  Standards Organizations: The Tire and Rim Association (TRA) or ETRTO provides standardized size lists for DOT-compliant tires.

Finding More Information

If you need a specific PDF with truck tire size charts, I can search for downloadable resources from manufacturers or retailers. Alternatively, I can:

•  Provide examples of tire models for these sizes (e.g., Michelin X Line Energy D, Bridgestone M726).

•  Generate a chart visualizing these sizes (e.g., width vs. rim diameter).

•  Filter sizes by axle type (e.g., steer, drive, trailer) or application (e.g., long-haul, off-road).

Would you like any of these options, or do you have a specific truck type or application in mind? Let me know!