QUESTION:
My competitors are providing used tires (as an option) on their trailers. Is this allowable?
ANSWER:
According to Section 571.120 (Federal Motor Vehicle Safety Standards), tire Selection and Rims for Motor Vehicles Other than Passenger Cars, each vehicle equipped with pneumatic tires for highway service must be equipped with pneumatic tires that meet the requirements of 571.119, new Pneumatic Tires for Vehicles Other than Passenger Cars. There is one exception. Paragraph S5.1.3 of ァ571.120 states that in place of tires that meet the requirements of Standard No. 119, a trailer may at the request of the purchaser be equipped at the place of manufacture of the vehicle with retreaded or used tires owned or leased by the purchaser, if the sum of the maximum load ratings meets the requirements of S5.1.2.
So, if your customer brings his used tires to your plant AND the tires are of an acceptable maximum load rating for the Gross Axle Weight Rating (GAWR) AND were originally manufactured in compliance with Standard No. 119, you may install them on his new trailer. To cover yourself you should have the customer sign a statement, or release, that he has provided his own tires and the manufacturer is not responsible for them.
QUESTION:
Are passenger rated tires allowed on trailers? We get only ST tires, but I still see many P rated tires on trailers.
ANSWER:
Passenger tires are allowed on trailers; however the individual maximum load capacity of the tire must be reduced 10%. The total adjusted tire capacities on any axle must then be equal to or greater than the GAWR specified on the Certification/VIN label for that axle.
QUESTION:
How do I know I have the sized proper tires on my trailer?
ANSWER:
Look at the VIN / Certification label on the front left side of the trailer. This will have the proper tire size, and inflation pressure, printed on it. You can check this by looking at the Maximum Load Rating stamped on the sidewall of the tire. This load rating (when multiplied by 2 - for the 2 tires on the axle) must be equal to, or greater than, the Gross Axle Weight Rating (GAWR) printed on the VIN / Certification label.