Brinkley lines and load allowances
Brinkley’s Model Z is a fifth wheel, Model G adds a toy-hauler garage, and Z AIR, I and Ix are travel-trailer families. Choose the coupling and loaded weight class before comparing interiors. Large storage volume does not establish either usable cargo allowance or the truck’s ability to carry a loaded pin.
Four published examples
| Model | Unloaded weight | GVWR | Published hitch |
|---|---|---|---|
| 2026 Z 2670 | 10,691 lb | 13,995 lb | 1,891 lb |
| 2026 G 3500, standard axles | 16,967 lb | 22,000 lb | 3,320 lb |
| I 235 | 6,987 lb | 8,495 lb | 610 lb |
| Ix 20x | 5,791 lb | 7,395 lb | 549 lb |
Compare the source editions: 2026 Z 2670 flyer, 2026 G 3500 flyer, I 235 model specification and Ix 20x specification. The Z AIR family uses a travel-trailer receiver connection, unlike the similarly named Z fifth wheels.
G 3500: water consumes part of the cargo gap
The standard-axle G 3500 has a 5,033 lb difference between published unloaded weight and GVWR. Its 150-gallon fresh tank holds about 1,251 lb of water at 8.34 lb per gallon. That leaves 3,782 lb of the arithmetic gap before other added supplies, equipment and toys.
The same flyer specifies an 11-foot garage, 3,000 lb garage-door capacity and 1,500 lb patio capacity. Use each rating in its stated operating position; neither the gross allowance nor the garage length increases a door rating.
Use both truck axles when checking pin weight
In a Brinkley owner scale discussion, one participant calculated a 3,150 lb pin using only rear-axle differences. A reply identified the omitted front-axle change. For comparable coupled and uncoupled weighings, pin load is the increase in the truck’s combined axle weights, with the same people, fuel and cargo aboard.
For a used unit, check Brinkley service campaigns and its model-year wall-crack guidance against the VIN and repair history. A manufacturer explanation or an individual report is not a defect rate for all models.