Why Do Trailer Tires Have a Lower Capacity When Used in a Dually Setup
Question:
Hello I have a 40 ft horse trailer with dual axle rating at 14,000 lbs. currently has f rated tires. the tire states single rating 3960 lbs and dual rating 3520 lbs. Why is the dual tire rating lower per tire?
asked by: Dave S
Expert Reply:
I spoke with our local tire guru here at etrailer and he offered the following explanation for the difference in tire capacity when a tire is used as a dually or single wheel setup:
The load on each tire in a dual tire system is never the same. Tires can be worn differently, if wear is different the overall diameter will be different and the larger tire will carry more load. Also the inner tire can be more loaded than the outer because of the crown in the road. The loads shared by the dual tires are different from each other.
Because of that they put a lower rating (usually 5 to 10 percent less) on the tires when used in a dually setup.
Product Page this Question was Asked From
Karrier ST235/85R16 Radial Trailer Tire - Load Range F
- Trailer Tires and Wheels
- Tire Only
- Radial Tire
- Load Range F
- 235/85-16
- 16 Inch
- M - 81 mph
- Kenda
more information >
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