Can I derate or prorate my trailers GVWR?Yes, you can! Prior to registration by contacting your purchasing dealer.
RERATING GUIDELINES
Can a used vehicle (trailer) be rerated?· No. Certification and ratings assignment apply only to newly built trailers. Once a trailer has been licensed and titled by an owner in any given U.S. state or sold and delivered to a purchaser at the first retail level in a Canadian province or territory, the certification obligation ends, along with assignment of ratings.
Source for information:
https://www.ntea.com/reratingfaqs
What are the maximum rerate limits for an Iron Bull or Norstar trailer?· Maximum derate amount: 30% of overall GAWR· Maximum prorate amount: 20% of overall GAWR· These amounts may not be possible on all trailers depending on the limits of components on your trailer. If the trailer has a 15k bumper pull coupler, we would bot be able to prorate higher than that without upgrading the coupler and/or other components.
Can axles be added to increase GVWR?· This would be determined on a case-by-case basis. Depending on the build of each specific trailer. However, if the trailer has been registered in your state, we cannot issue a new title or sticker reflecting the increased GVWR.
Source for information:
https://www.ntea.com/reratingfaqs