---
title: "SAE J2807 — Glossary TowingDad"
canonical: https://towingdad.shop/glossary/sae-j2807/
lang: en
---

# SAE J2807
The recommended practice behind modern published tow ratings, including a Davis Dam grade test and defined acceleration and braking criteria.

## In practice
J2807 is the reason a modern tow rating means roughly the same thing across manufacturers. Before it, each maker set ratings by its own method and the numbers were not comparable. The practice specifies a defined test regime — including the Davis Dam grade climb and criteria for acceleration and braking with a trailer attached — so a rating reflects measured performance rather than marketing.

The full standard is paywalled, so we cite the standard itself and manufacturers' own J2807 explanations rather than reproducing figures from it. Two practical implications: a rating assumes a specific trim, axle ratio and cab configuration, so it is not transferable between versions of the same model; and it assumes conditions your trip may not match, since altitude, sustained grades, headwinds and roof cargo all erode real-world margin.

## Related terms
- [GVWR](/glossary/gvwr/)
- [GCWR](/glossary/gcwr/)
- [Drop fee](/glossary/drop-fee/)
- [Non-consensual tow](/glossary/non-consensual-tow/)