Vehicle Load Distribution
Front and rear axle weights with GVWR / GAWR flags.
Example
You enter
- Wheelbase (in) 140
- Payload (lb) 1000
- Payload position from cab (in) 60
- GVWR (lb, optional) 8800
- Front GAWR (lb, optional) 4400
- Rear GAWR (lb, optional) 5500
- Curb front axle (lb) 2500
- Curb rear axle (lb) 2300
You get
- Front axle total 3071 lb
- Rear axle total 2729 lb
- Gross weight 5800 lb
Details, formula, and sources
Front axle = Σ(weight × (wheelbase − distance_from_rear)) / wheelbase; Rear = total − Front. Compared against user-supplied GVWR and per-axle GAWR labels.
FMVSS 49 CFR 567.4 (vehicle certification labels) by section.
Free at ecfr.gov.
Estimate. AHJ and licensed professional govern.
Field names used by the API: wheelbase_in, payload_lb, payload_position_from_cab_in, gvwr_lb, front_gawr_lb, rear_gawr_lb, curb_front_lb, curb_rear_lb, front_axle_lb, rear_axle_lb, gross_lb
- GVWR / GAWR source vehicle door-jamb sticker (legal record)49 CFR 567.4