Solution for Rear Sag on Thor 2016 Thor Synergy Towing Car Hauler

Published 04/04/2023

Products Featured in This Question

SuperSprings Custom Suspension Stabilizer and Sway Control Kit

(279)

$589.99

1-7/8" 12pt Shallow Socket - 3/4" Drive - Chromium-Vanadium Steel

(281)

$19.37

Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 4,000 lbs GTW, 400 lbs TW

(843)

$825.00

Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 6,000 lbs GTW, 600 lbs TW

(843)

$850.00

Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 10,000 lbs GTW, 1,000 lbs TW

(843)

$700.42

Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 12,000 lbs GTW, 1,200 lbs TW

(843)

$821.19

Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 14,000 lbs GTW, 1,400 lbs TW

(843)

$925.00

Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 16,000 lbs GTW, 1,600 lbs TW

(843)

$950.00

Question:

I have a Thor Synergy Class C motorhome on a 2016 Mercedes Sprinter 3500 dual rear wheel chassis. I recently purchased a car hauler trailer to carry vehicles to car shows and found that the trailer tongue weight is sagging the rear of the motorhome to the point that my steering feels light when towing the trailer with a load. Towing the trailer unloaded has no impact on the steering feel. Will the part # SS62KV solve this problem alone or are there other components that might assist with shifting weight forward on the motorhome to restore a more firm steering input?

asked by: Jim

Expert Reply:

The SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SS62KV will help with the rear sag and improve control in your 2016 Thor Synergy. These will also help improve your ride in general by stabilizing the springs. However, the best thing you can do is to add a weight distribution system.

A WDH will get you level again so your steering will be back to normal. It will also help combat sway while towing your trailer. You will need to choose the correct system based on your loaded tongue weight. A scale like the # e99044 will give you an accurate measurement.

For a weight distribution hitch I recommend Equal-i-zer since they are reliable and generally considered the best. We have the following options available:

-Equal-i-zer Weight Distribution System # EQ37040ET (up to 400 lbs of tongue weight)

-Equal-i-zer Weight Distribution System # EQ37060ET (200-600 lbs)

-Equal-i-zer Weight Distribution System # EQ37100ET (600-1,000 lbs)

-Equal-i-zer Weight Distribution System # EQ37120ET (800-1,200 lbs)

-Equal-i-zer Weight Distribution System # EQ37140ET (1,000-1,400 lbs)

-Equal-i-zer Weight Distribution System # EQ64FR (1,200-1,600 lbs)

Again, the correct system depends on the loaded tongue weight of your setup. Ideally you want that number to fall in the middle of the tongue weight range. You will also need # ALL643216 for hitch ball installation.

I have attached some review and installation videos below for your reference.