2022 Grand Design RV Solitude 378mbs-r Specs
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Safe Towing Capacity
80%
Under capacity
Safe zone
Max rating
Essential Upgrades for the 2022 Grand Design RV Solitude 378mbs-r
Towing & Dimensions
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| GVWR | 16800 lbs | - | - | - |
| Dry Weight | 14344 lbs | - | - | - |
| Hitch Weight | 2686 lbs | - | - | - |
| Payload Capacity | 2456 lbs | Coil SumoSprings | Shop Suspension Kits | - |
| Length | 482 in | Furrion Backup Camera | Shop Cameras | - |
| Width | 101 in | Clip On Mirrors | Shop Mirrors | - |
| Exterior Height | 161 in | Telescoping Ladder | Shop Ladders | - |
Specs
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GVWR
16800 lbs
Dry Weight
14344 lbs
Hitch Weight
2686 lbs
Payload Capacity
2456 lbs
Length
482 in
Width
101 in
Exterior Height
161 in
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Electrical & Solar
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Battery Converter Amps | 55 | - | - | - |
| Shore Power | 30 Amps | - | - | - |
| Battery Type | 12V Lead-Acid | Renogy 100Ah LiFePO4 | RV Batteries | Top 5 |
| Solar Pre-Wired | Optional | - | - | - |
| Inverter | Optional | - | - | - |
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Battery Converter Amps
55
Shore Power
30 Amps
Battery Type
12V Lead-Acid
Solar Pre-Wired
Optional
Inverter
Optional
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Tank Capacities
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Fresh Water Holding Tanks | 1 | - | - | - |
| Number Of Gray Water Holding Tanks | 1 | - | - | - |
| Number Of Black Water Holding Tanks | 1 | - | - | - |
| Fresh Water Tank Capacity | 93 gal | - | Fresh Water Tanks | - |
| Gray Water Tank Capacity | 100 gal | - | - | - |
| Black Water Tank Capacity | 50 gal | - | Back Water Tanks | - |
| Number Of Propane Tanks | 2 | - | - | - |
| Propane Tank Capacity | 60 lbs | 30Lb Propane Tank | Propane Tank Capacity | - |
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Number Of Fresh Water Holding Tanks
1
Number Of Gray Water Holding Tanks
1
Number Of Black Water Holding Tanks
1
Fresh Water Tank Capacity
93 gal
Gray Water Tank Capacity
100 gal
Black Water Tank Capacity
50 gal
Number Of Propane Tanks
2
Propane Tank Capacity
60 lbs
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Tires & Wheels
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Rear Tire Speed Rating | H | - | - | - |
| Wheels Composition | Aluminum | - | - | - |
| Rear Brake Type | Electric Drum | - | - | - |
| Spare Tire Location | Exterior Mounted | - | - | - |
| Front Brake Type | Not Applicable | - | - | - |
| Rear Wheel Diameter | 17.5 | - | - | - |
| Rear Tire | 17.5 Inch H Rated with NitroFill Full Spec | - | - | - |
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Rear Tire Speed Rating
H
Wheels Composition
Aluminum
Rear Brake Type
Electric Drum
Spare Tire Location
Exterior Mounted
Front Brake Type
Not Applicable
Rear Wheel Diameter
17.5
Rear Tire
17.5 Inch H Rated with NitroFill Full Spec
Heating & Cooling
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Air Conditioning Type | Automatic | Dometic 13.5K Air Conditioner | Shop All RV AC | - |
| Water Heater Tank Capacity | 12 g | RV Tank Water Heater | RV Water Heaters | - |
| Heater Type | Automatic | - | - | - |
| Water Heater Pump Power Mode | Electrical / Propane | - | - | - |
Specs
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Air Conditioning Type
Automatic
Water Heater Tank Capacity
12 g
Heater Type
Automatic
Water Heater Pump Power Mode
Electrical / Propane
Heating & Cooling Best Sellers
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Living Room / Bedroom(s)
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Bathrooms | 1 | - | - | - |
| Sofa Material | Vinyl | - | - | - |
| Master Bedroom Door Style | Conventional Door | - | - | - |
| Living Area Location | Rear | - | - | - |
| Number Of Convertible / Sofa Beds | 2 | - | - | - |
| Reclining Sofa | No | RV Loveseat Recliner Sofa | Shop Sofa | - |
| Full Size Master Bedroom Closet | Yes | - | - | - |
| Master Bedroom Location | Front / Center | - | - | - |
| Number Of Sofas | 2 | Tri-Fold Sofa | - | - |
| Master Bedroom Shades / Curtains | Yes | - | - | - |
| Number Of Bunk Beds | 1 | - | - | - |
| Master Bedroom Flooring Type | Vinyl | - | - | - |
| Number Of Recliner / Rockers | 2 | - | - | - |
| Master Bedroom Mirror Doors | Yes | - | - | - |
| Number Of Queen Size Beds | 1 | Queen RV Mattress | Shop Mattresses | - |
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Number Of Bathrooms
1
Sofa Material
Vinyl
Master Bedroom Door Style
Conventional Door
Living Area Location
Rear
Number Of Convertible / Sofa Beds
2
Reclining Sofa
No
Full Size Master Bedroom Closet
Yes
Master Bedroom Location
Front / Center
Number Of Sofas
2
Master Bedroom Shades / Curtains
Yes
Number Of Bunk Beds
1
Master Bedroom Flooring Type
Vinyl
Number Of Recliner / Rockers
2
Master Bedroom Mirror Doors
Yes
Number Of Queen Size Beds
1
Living Room / Bedroom(s) Best Sellers
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Kitchen / Dining
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Kitchen Table Configuration | Chairs | - | - | - |
| Oven Depth | 24 / 609.6 in | - | - | - |
| Kitchen Location | Center | - | - | - |
| Refrigerator Size | Full-Size | - | - | - |
| Number Of Oven Burners | 4 | - | - | - |
| Kitchen / Living Area Flooring Type | Vinyl | - | - | - |
| Refrigerator Power Mode | Electric | - | - | - |
Specs
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Kitchen Table Configuration
Chairs
Oven Depth
24 / 609.6 in
Kitchen Location
Center
Refrigerator Size
Full-Size
Number Of Oven Burners
4
Kitchen / Living Area Flooring Type
Vinyl
Refrigerator Power Mode
Electric
Bathroom
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Bathroom Flooring Type | Vinyl | - | - | - |
| Toilet Type | Porcelain | RV Toilet with Sprayer Attachment | Toilets | Top 5 |
| Bathroom Location | Center | - | - | - |
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Bathroom Flooring Type
Vinyl
Toilet Type
Porcelain
Bathroom Location
Center
Exterior
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Awning Length | 31 ft/m | - | All Awnings | - |
| Number of Awnings | 2 | Motorized RV Awning Set | Shop Awnings | - |
| Leveling Jack Type | Front Power / Rear Power | - | - | - |
| Number Of Axles | 2 | - | - | - |
| Sidewall Construction | Fiberglass | - | - | - |
| Number Of Emergency Exits | 1 | - | - | - |
| Number of Doors | 1 | - | - | - |
| Door Type | Plastic / Glass | - | - | - |
| Brand Name | Rockford | - | - | - |
| Body Material | Aluminum | - | - | - |
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Awning Length
31 ft/m
Number of Awnings
2
Leveling Jack Type
Front Power / Rear Power
Number Of Axles
2
Sidewall Construction
Fiberglass
Number Of Emergency Exits
1
Number of Doors
1
Door Type
Plastic / Glass
Brand Name
Rockford
Body Material
Aluminum
Exterior Best Sellers
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Options
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Surround Sound | No | - | - | - |
| Heat Prewiring | Yes | - | - | - |
| Power Retractable Awning | Yes | - | - | - |
| Bunkhouse | Yes | - | - | - |
| Metallic | No | - | - | - |
| Satellite Prewiring | Yes | - | - | - |
| Wallpaper | Yes | - | - | - |
| Interior Wood Finish | Yes | - | - | - |
| Phone Prewiring | No | - | - | - |
| Sliding Glass Door | No | - | - | - |
| Water Heater Tank Bypass | Yes | - | - | - |
| Satellite | Yes | - | - | - |
| Battery Power Converter | Yes | - | - | - |
| TV Antenna Prewiring | Yes | - | - | - |
| Heated | No | - | - | - |
| Power Retractable Slideout | Yes | - | - | - |
| Cable Prewiring | Yes | - | - | - |
| Overhead Fan | Yes | Overhead Fan | - | - |
| Screened Room | No | - | - | - |
| Washer / Dryer Prewiring | Yes | - | - | - |
| Refrigerator | Standard | - | - | - |
| Air Conditioning Prewiring | Yes | - | - | - |
Specs
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Surround Sound
No
Heat Prewiring
Yes
Power Retractable Awning
Yes
Bunkhouse
Yes
Metallic
No
Satellite Prewiring
Yes
Wallpaper
Yes
Interior Wood Finish
Yes
Phone Prewiring
No
Sliding Glass Door
No
Water Heater Tank Bypass
Yes
Satellite
Yes
Battery Power Converter
Yes
TV Antenna Prewiring
Yes
Heated
No
Power Retractable Slideout
Yes
Cable Prewiring
Yes
Overhead Fan
Yes
Screened Room
No
Washer / Dryer Prewiring
Yes
Refrigerator
Standard
Air Conditioning Prewiring
Yes
Entertainment
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Televisions | 2 | Insignia LED HD Alexa TV | Shop RV TV's | - |
| Speaker Location | Interior / Exterior | RecPro Exterior Speakers | - | - |
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Number Of Televisions
2
Speaker Location
Interior / Exterior
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Instrumentation
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Radios | 1 | - | - | - |
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Number Of Radios
1
Interior
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Material | Vinyl | - | - | - |
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Material
Vinyl
Quick Overview
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Parent Company | Winnebago Industries | - | - | - |
| Year | 2022 | - | - | - |
| Make | Grand Design | - | - | - |
| Display Name | Solitude 378MBS-R | - | - | - |
| Class | Fifth Wheel | - | - | - |
| Max Sleeping Count | 7 | - | - | - |
| Number of Slideouts | 4 | - | - | - |
| Introduction Year | 2021 | - | - | - |
Specs
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Parent Company
Winnebago Industries
Year
2022
Make
Grand Design
Display Name
Solitude 378MBS-R
Class
Fifth Wheel
Max Sleeping Count
7
Number of Slideouts
4
Introduction Year
2021
How We Scored This RV
Our MintRV Rating analyzes over 50 specifications across 5 key dimensions. Each dimension starts at 5.0 points and adjusts based on how this RV's specs compare to others in its class. Below is exactly how we calculated each score for this fifth wheel.
Tow-Ready Score
5.5/10
Base Score
5.0
Spec-based adjustments
Based on Fifth Wheel class averages
+0.5
Final Tow-Ready Score
5.5
Living Space & Layout
6.0/10
Base Score
5.0
Spec-based adjustments
Based on Fifth Wheel class averages
+1.0
Final Living Space & Layout
6.0
Comfort & Features
6.3/10
Base Score
5.0
Spec-based adjustments
Based on Fifth Wheel class averages
+1.3
Final Comfort & Features
6.3
Storage Space
5.0/10
Base Score
5.0
Spec-based adjustments
Based on Fifth Wheel class averages
+0.0
Final Storage Space
5.0
Off-Grid & Campsites
6.3/10
Base Score
5.0
Spec-based adjustments
Based on Fifth Wheel class averages
+1.3
Final Off-Grid & Campsites
6.3
About Our Rating Methodology
MintRV Ratings are calculated using verified manufacturer specifications. We compare each RV against others in its class type and weight category. Scores are updated when new specs become available. Learn more about our methodology →
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Frequently Asked Questions
To safely tow the 2022 Grand Design RV Solitude 378mbs-r, ensure your vehicle's rated tow capacity exceeds its GVWR of 16800 lbs. With a dry weight of 14344 lbs and hitch weight of 2686 lbs, most midsize trucks and SUVs can tow it comfortably with a 10-20% safety margin.
This Fifth Wheel has a dry weight of 14344 lbs and a GVWR of 16800 lbs, giving a payload capacity of 2456 lbs for gear, water, and supplies.
The approximate dimensions are length 482 in., width 101 in., and height 161 in. Always confirm clearances for garages, storage, and campsites.
The Solitude 378mbs-r includes a fresh water capacity of gallons, black water tank(s), and lbs of propane capacity-ideal for off-grid weekends.
Many Solitude 378mbs-r owners add a weight-distribution hitch, brake controller, leveling system, and portable generator to improve towing comfort. Solar kits, backup cameras, and upgraded tires are also popular upgrades.
With a GVWR of 16800 lbs and dry weight of 14344 lbs, the Solitude 378mbs-r is light enough for smaller tow vehicles yet rugged enough for light off-road travel. Add solar, extra propane, and a generator for extended off-grid stays.
This floorplan sleeps up to 7 people comfortably - perfect for couples or small families seeking a lightweight, easy-tow Fifth Wheel.
The Solitude 378mbs-r features body construction with sidewalls and 2 axle(s). Its GVWR of 16800 lbs ensures strength without excessive towing weight.
?? Tip: Always check your vehicle's specific towing capacity in the owner's manual. Consider payload and tongue weight too!
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