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Old 07-25-2021, 02:22 PM   #13
CALinSC
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Join Date: Nov 2015
Location: Taylors, SC
Posts: 353
It was just an informatory note.

Tire manufacturers have NOTHING to do with the fitment of tires onto a vehicle other than providing designated sizes with their specs for the vehicle manufacturer to make a choice from. The vehicle manufacturer has the sole authority for Original Equipment tire fitments.

The certification label on the axle may be 9000# but the vehicle manufacturer has the authority to set the vehicle GAWRs below the axle manufacturers certified maximum load. The GAWRs set by the vehicle manufacturer are certified on the vehicle certification label.

About 98% of all USA RV trailer manufacturers are members of the RVIA organization. Their recommendations are almost always followed by their members. The catch is; loss of membership.

When using the RVIA 10% load capacity reserve recommendation; 9000# GAWR axles will require tires with a minimum load capacity of 4950#. The recommendation is not grandfathered. Trailers vehicle certified before the the recommendation was implemented must comply with FMVSS standards which are lower than the RVIA recommendation.
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