Tires shall not carry a weight in excess of which specification?

• A. The tire's maximum static load rating
• B. The vehicle's gross axle weight rating
• C. The vehicle's gross vehicle weight rating
• D. The recommended load for operation of truck tires used

Answer: (D)

Tires are designed with a specific load they can safely carry, and the practical limit for safe operation is the tire manufacturer’s recommended load for that tire in service. This recommended load accounts for real-world conditions like heat buildup, inflation pressure, and loading patterns, and keeps performance and safety margins intact. Exceeding it can cause overheating, accelerated wear, or failure, even if you haven’t hit the tire’s absolute maximum rating.

Vehicle-wide limits like the gross axle weight rating and the gross vehicle weight rating matter for overall safety, but they don’t set the per-tire operating limit. The tire’s maximum static load rating is a hard ceiling, yet the safe practice is to operate at or below the tire’s recommended load for operation, which is why that specification is the controlling one for tires.