How this is made
Tow ratings are safety-critical. A wrong number here is worse than no number, so this page is explicit about where every figure comes from and what we refuse to publish.
What we publish
- Maximum trailer weight — always with its configuration. Engine, cab, bed and drivetrain, because the same badge spans thousands of pounds.
- GCWR where the manufacturer publishes it.
- Tongue weight — computed at the conventional 10–15% band, never quoted as a manufacturer figure.
What we deliberately do not publish
- Payload, per model. It is a per-VIN value on your door-jamb label. Independent sources disagree with manufacturers in both directions, so a per-model figure would be wrong for most vehicles.
- A tongue weight table. No manufacturer publishes one, because tongue weight depends on how you load the trailer. Every manufacturer states the percentage rule instead. So do we.
- Third-party database ratings. Commercial vehicle APIs have been measured overstating a truck's rating by thousands of pounds in the dangerous direction, and none of them carry axle ratio. We use manufacturer towing guides only.
- Back-catalogue model years. We publish the current guide. Older years are not reliably sourceable and we will not guess them.
How the numbers get here
Manufacturer charts are PDFs. Reading them as plain text collapses an eleven-column table into a flat list of numbers and dashes — one misalignment silently publishes a Crew Cab rating as a Regular Cab rating. So every value is extracted positionally: bound to the x-coordinate of its own column and the y-coordinate of its own GCWR row. Any cell that does not land inside a known column is dropped rather than guessed, and a build fails outright if any extracted trailer rating meets or exceeds its own GCWR, which is physically impossible.
Corrections
If a figure here disagrees with your manufacturer's guide, the manufacturer is right and we want to know. Tell us and we will fix it and re-verify.