Tire Load-Rating Check (per Axle)

The axle scale weight checked against the tires on the axle times the marked max load per tire, reporting capacity, utilization percent, and any overload. Use the sidewall's single rating on a steer axle and the dual rating in a dual position; the marking and the AHJ govern.

axle_capacity = tires_on_axle x tire_max_load; utilization% = 100 x axle_weight / axle_capacity; ok if axle_weight <= axle_capacity, else overloaded by the difference.

49 CFR 393.75 (tire load) by section and the DOT tire sidewall max-load marking; not reproduced.

Read-only at ecfr.gov. The sidewall marking and inflation rating govern; use the single vs dual rating to match the wheel position.

Math aid for personal verification. The ELD on the truck and the carrier tariff are the legal record. State limits may be lower than federal.

Field names used by the API: axle_weight_lb, tires_on_axle, tire_max_load_lb, axle_capacity_lb, utilization_pct, ok

• Single vs dual use the sidewall's single rating on a steer position and the dual rating in a dual position - they differDOT sidewall marking
• Inflation the marked max load is rated at a specific cold inflation pressure; under-inflation lowers capacity49 CFR 393.75
• Not the GAWR this is a tire-load check, not a substitute for the axle's gross axle weight rating (GAWR)manufacturer GAWR