How to Determine Correct Weight Distribution System Spring Bars Are Needed

Updated 04/02/2021 | Published 03/31/2021

Question:

How do determine which weight class of bars to use ? On a class iv or v frame hitch 24 ft enclosed steel frame trailer weighing 6000 lb I have a wd rated for 12k lbs reese pro series 2 5/16 ball 3435 lb car in trailer

asked by: Mel O

Expert Reply:

Weight distribution hitches are classified by the range of trailer tongue weights their spring bars are rated for.

If your current weight distribution hitch like the # RP66022 you'd looked at is rated for up to 12000 lbs, then the bars would be rated at 10% of that, which would be 1200 lbs. If the 6000 lb weight you mentioned represents the weight of the fully loaded trailer, then the tongue weight of the trailer should be somewhere in the 600-900 lbs range.

To determine if the system you currently have is properly rated for the weight of the trailer, you'll want to find the trailer's tongue weight when its fully loaded. You'll also want to add the weight of anything carried in the truck bed behind the rear axle to the tongue weight figure you get. I'll link you to a help article that explains how to determine the trailer tongue weight.

If you find that your tongue weight is above 600 or so lbs, the bars you currently have will work fine.

If you need replacement spring bars, we might be able to obtain some, but I'd need to know the part number off your current bars so I can find the right replacements.

expert reply by: Mike L