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Recommendations For Upgrading the Suspension on a 2018 Grand Design Travel Trailer


9000#, 34-foot travel trailer, tandem 4400# axles, Hensley hitch, F-350. SumoSprings or Timbren auxiliary springs and what capacity? Mor-ryde CRE3000 or SRE4000? I am tired of bending spring hangers and replacing tires! Thank you.


Expert Reply:

With the Timbren options having the lowest weight capacity of 7,000 pounds, I would not suggest going with them. That being said, the SumoSprings # TSS-107-40 will be the ones I do suggest. These are rated for axles with a capacity of 3,000 to 5,000 pounds and will be the better option.

The equalizer upgrade will depend on your wheelbase, but having 4,400 pound axles, I would not suggest the MORryde SRE4000. These are rated at 5,200 to 7,000 pounds per axle. We have the CRE3000 for the wheelbase measurements of 33 inches ( # MR87ZR ) and 35 inches ( # MR27ZR )

With all this being said, having two 4,400 axles, you maximum capacity should be 8,800 pounds. If the trailer is being loaded to 9,000 pounds, you may actually be overloading the trailer. This will definitely cause spring hangers to bend and the tires to ware prematurely.

expert reply by:
Lazer S

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