Can the Capacity of a Trailer be Increased by Upgrading the Axle?  

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Expert Reply:

Since your trailer currently has a 3,500 lb axle, the restriction of 2,990 lbs max capacity must be due to another component on your trailer that doesn't have the that high of a capacity. This could be your coupler, leaf springs, wheels, tires, or the frame itself. If the frame itself is rated the lowest, then your capacity cannot be increased, but any of the other components does give that ability to increase weight capacity. The weight capacities should be listed on the individual components, just remember your wheels, tires, and springs will have 1/2 the capacity so for instance if your leaf springs are rated for 3,500 lbs like # e54SR then they will state a 1,750 lb capacity since the two sides combined will reach that 3,500 lbs.

If you determine your capacity is limited by a component you most likely can increase your trailer capacity by upgrading that component. Based on the weight of the two UTV's, I recommend upgrading to a larger axle, larger suspension and adding trailer brakes. For a universal fit, I recommend the Timbren Axle-Less Suspension - Spindle Only - Regular Tires - 5200 lbs # ASR5200S01 which comes with the suspension so no leaf springs are needed, but you will need to use a 2 inch square bar (not included) in the integrated holes of the assemblies.

With the weight you will be towing, most states will require trailer brakes, so I recommend the Dexter hubs # 8-201-5UC3-EZ and brake assemblies # AKEBRK-7-SA. Then you will use # 10-1-1 wire sold by the foot for the brake wiring and 7-Way Molded Trailer Plug with Junction Box # HS381-9000 to finish your wiring.

If you need more help, let me know.

expert reply by: Jason S

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