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RY103 Highway Line Haul Trailer Position
Application
The RY103 is available in a number of sizes for special applications and is recommended for light-duty vans and pickups. The versatile and reliable RY103 incorporates low-profile engineering with proven quality construction for more miles-per-gallon, greater tier mileage, more payload potential, improved handling and better stability in steer, drive, trailer and dolly applications.
Features and Benefits
- Straight five-rib tread design with four grooves inhibits stone retention, promotes even wear and provides a smooth ride, improved handling and superior wet traction.
- Wide shoulder ribs reduce shoulder step wear.
- Each size is manufactured with a specific tread depth to meet a greater range
of applications.
- The 315/80R22.5 20PR is specially designed for sanitation vehicle operations that require a high load-carrying capacity per tire and for cut protection.
The Yokohama 315 / 80R22.5 RY103 (20) tires were specially developed for sanitation vehicle operations that require a high load-carrying capacity per tire, cut protection, long-wearing tread compound, and a durable casing that allows multiple retreads. These tires were also designed for smooth, even wear, good traction and fuel economy. Since it is a special design, they must be installed and operated only on sanitation vehicles in accordance with the following guidelines:
- During its original tread life, the tire must be mounted on a 9.0" or 9.75" rim width.
- Only after the tire has been retreaded may it be installed on an 8.25" rim. The buff radius at retread must be 27" to accommodate the 8.25" rim width.
- Tires to be reinstalled on 9.0" rim widths after retreading must be buffed to 28" before the retread is installed and the retreading process is completed.
- Vehicle speeds must not exceed 55 miles per hour.
- Normal maintenance procedures involving inflation pressures, repairs or retreading must be performed according to Yokohama's recommendations and those of the retread and repair material manufacturers.
- If the rim/wheel specifications state a lower maximum weight-carrying capacity at a lower maximum air pressure than the tire, the maximum load-carrying capacity of the tire is lessened. That, in turn, governs the maximum load capacity of the tire/wheel assembly.
Cautions - Use of 20 vs. 22 ply rated tires.
Use of the 20 ply rated tires on a vehicle with a 20,000 lb., front axle down rates the maximum and legal carrying capacity of the front axle to 18,000 lbs.
The 22 ply rated Y773 is appropriate for use on vehicles with front axle capacities of either 18,000 lbs. or 20,000 lbs. The design rim width is 9.00 inches for both tires. Maximum air pressure is 130 psi for both tires. Additionally, section width and diameter are the same for both tires.
However, a tire upgrade alone, does not upgrade the carrying capacity of the front axle of the vehicle.
To legally and safely carry 20,000 lbs. on the front axle requires front end components, wheels and tires to all be rated at 20,000 lbs.
- Wheel ratings are stamped on the wheel.
- Axle capacities can be verified by checking the vehicle line sheet, or
contacting the axle manufacturer with the axle tag number.
- Carrying capacities of tires are marked on the sidewall.
Summary
The legal and maximum carrying capacity in these applications, is dependent on the lightest rated item: tire, wheel, or front suspension/steering component.
Operational Speed: Maximum operational speed is 55 mph
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