Vehicle weight ratings play a critical role in safety, compliance, durability, and operational performance — but changing those ratings is far more complex than many realize. This report explains how gross vehicle weight rating (GVWR) and gross axle weight ratings (GAWR) are established, why they cannot be changed arbitrarily, and the regulatory, engineering, warranty, and liability implications that accompany requests to increase or decrease vehicle weight ratings.
This resource provides practical guidance on evaluating customer requests for rating changes, understanding OEM responsibilities, and navigating the certification requirements associated with new vehicles. Learn when rerating may be possible, why OEM engineering reviews are essential, how weight ratings affect vehicle compliance and performance, and why there is no recognized process for rerating used vehicles.