Timbren Silent Ride Suspension for 2023 Grand Design Solitude 390RK
Updated 11/13/2025 | Published 10/22/2025
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Question:
We have a 2023 Grand Design Solitude 390rk which has 7K dual axles under it. Has anyone ever installed the Timbren silent system on one of these?
asked by: Jerald T
Expert Reply:
Hey Jerald! I can't say I have heard of anyone adding the Timbren Silent Ride Suspension # TSR14KT01 (33" axle spacing) or # TSR14K35T01 (35" axle spacing) to their Grand Design but I'm sure some people have done it. This wouldn't be too different from the independent suspension system Grand Design adds from the factory on some models of the Solitude.
What we usually see Grand Design owners buy, and what I recommend, is the Roadmaster Comfort Ride Leaf Spring Suspension Kit # RM-2460-2570. This uses slipper springs in a unique configuration to give you an independent suspension system. It also comes with their shock kit. The combination of the two adds the best upgrade out there. We have installed this system on quite a few Grand Design models which you can see in the installation video below.
Any big trips planned with your Solitude this fall?
(click to enlarge)
Product Page this Question was Asked From
Timbren Silent Ride Suspension for Tandem Axle Trailers w/ 3" Round Axles - 14,000 lbs
- Trailer Suspension Parts
- Leaf Spring Replacement System
- Camper
- Car Hauler
- Utility Trailer
- 14000 lbs
- Round Axle - 3 Inch
- Tandem Axle
- Timbren
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Robin H.
11/13/2025
Hey Jerald, how did things go with the suspension upgrade on your Solitude? Did you end up trying the Roadmaster Comfort Ride setup or stick with the Timbren Silent Ride system? Your experience could help others looking to smooth out their ride on similar trailers.