2018 Grand Design RV Solitude 377mbs Specs
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Safe Towing Capacity
80%
Under capacity
Safe zone
Max rating
Essential Upgrades for the 2018 Grand Design RV Solitude 377mbs
Towing & Dimensions
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| GVWR | 16000 lbs | - | - | - |
| Dry Weight | 13200 lbs | - | - | - |
| Hitch Weight | 2750 lbs | - | - | - |
| Length | 490 in | Furrion Backup Camera | Shop Cameras | - |
| Width | 101 in | Clip On Mirrors | Shop Mirrors | - |
| Exterior Height | 161 in | Telescoping Ladder | Shop Ladders | - |
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GVWR
16000 lbs
Dry Weight
13200 lbs
Hitch Weight
2750 lbs
Length
490 in
Width
101 in
Exterior Height
161 in
Towing & Dimensions Best Sellers
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Electrical & Solar
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Battery Converter Amps | 75 | - | - | - |
| 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
75
Shore Power
30 Amps
Battery Type
12V Lead-Acid
Solar Pre-Wired
Optional
Inverter
Optional
Electrical & Solar Best Sellers
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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 | 2 | - | - | - |
| 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
2
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 Wheel Diameter | 16 | - | - | - |
| Wheels Composition | Aluminum | - | - | - |
| Rear Brake Type | Electric Drum | - | - | - |
| Spare Tire Location | Exterior Mounted | - | - | - |
| Front Brake Type | Not Applicable | - | - | - |
| Rear Tire | 16-Inch G-Rated Full Spec | - | - | - |
Specs
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Rear Wheel Diameter
16
Wheels Composition
Aluminum
Rear Brake Type
Electric Drum
Spare Tire Location
Exterior Mounted
Front Brake Type
Not Applicable
Rear Tire
16-Inch G-Rated 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 |
|---|---|---|---|---|
| Master Bedroom Door Style | Conventional Door | - | - | - |
| Living Area Location | Rear | - | - | - |
| Number Of Full Size Beds | 1 | - | - | - |
| Number Of Sofas | 2 | Tri-Fold Sofa | - | - |
| Full Size Master Bedroom Closet | Yes | - | - | - |
| Master Bedroom Location | Front | - | - | - |
| Master Bedroom Shades / Curtains | Yes | - | - | - |
| Number Of Convertible / Sofa Beds | 2 | - | - | - |
| Reclining Sofa | No | RV Loveseat Recliner Sofa | Shop Sofa | - |
| Number Of Recliner / Rockers | 2 | - | - | - |
| Master Bedroom Flooring Type | Vinyl | - | - | - |
| Master Bedroom Mirror Doors | Yes | - | - | - |
| Number Of Queen Size Beds | 1 | Queen RV Mattress | Shop Mattresses | - |
| Sofa Material | Vinyl | - | - | - |
| Number Of Bathrooms | 1 | - | - | - |
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Master Bedroom Door Style
Conventional Door
Living Area Location
Rear
Number Of Full Size Beds
1
Number Of Sofas
2
Full Size Master Bedroom Closet
Yes
Master Bedroom Location
Front
Master Bedroom Shades / Curtains
Yes
Number Of Convertible / Sofa Beds
2
Reclining Sofa
No
Number Of Recliner / Rockers
2
Master Bedroom Flooring Type
Vinyl
Master Bedroom Mirror Doors
Yes
Number Of Queen Size Beds
1
Sofa Material
Vinyl
Number Of Bathrooms
1
Living Room / Bedroom(s) Best Sellers
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Kitchen / Dining
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Oven Depth | 22 / 558.8 in | - | - | - |
| Kitchen Location | Center | - | - | - |
| Refrigerator Size | Full-Size | - | - | - |
| Number Of Oven Burners | 3 | - | - | - |
| Kitchen / Living Area Flooring Type | Carpet / Vinyl | - | - | - |
| Refrigerator Power Mode | Electric / Propane | - | - | - |
| Kitchen Table Configuration | Chairs | - | - | - |
Specs
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Oven Depth
22 / 558.8 in
Kitchen Location
Center
Refrigerator Size
Full-Size
Number Of Oven Burners
3
Kitchen / Living Area Flooring Type
Carpet / Vinyl
Refrigerator Power Mode
Electric / Propane
Kitchen Table Configuration
Chairs
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 | 30.3 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 | - | - | - |
| Body Material | Aluminum | - | - | - |
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Awning Length
30.3 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
Body Material
Aluminum
Exterior Best Sellers
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Options
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Sliding Glass Door | No | - | - | - |
| Bunkhouse | No | - | - | - |
| Overhead Fan | Yes | Overhead Fan | - | - |
| Water Heater Tank Bypass | Yes | - | - | - |
| Interior Wood Finish | Yes | - | - | - |
| Refrigerator | Standard | - | - | - |
| TV Antenna Prewiring | Yes | - | - | - |
| Power Retractable Awning | Yes | - | - | - |
| Screened Room | No | - | - | - |
| Battery Power Converter | Yes | - | - | - |
| Washer / Dryer Prewiring | Yes | - | - | - |
| Heated | No | - | - | - |
| Surround Sound | Yes | - | - | - |
| Cable Prewiring | Yes | - | - | - |
| Phone Prewiring | No | - | - | - |
| Satellite Prewiring | Yes | - | - | - |
| Air Conditioning Prewiring | Yes | - | - | - |
| Wallpaper | Yes | - | - | - |
| Heat Prewiring | Yes | - | - | - |
| Power Retractable Slideout | Yes | - | - | - |
Specs
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Sliding Glass Door
No
Bunkhouse
No
Overhead Fan
Yes
Water Heater Tank Bypass
Yes
Interior Wood Finish
Yes
Refrigerator
Standard
TV Antenna Prewiring
Yes
Power Retractable Awning
Yes
Screened Room
No
Battery Power Converter
Yes
Washer / Dryer Prewiring
Yes
Heated
No
Surround Sound
Yes
Cable Prewiring
Yes
Phone Prewiring
No
Satellite Prewiring
Yes
Air Conditioning Prewiring
Yes
Wallpaper
Yes
Heat Prewiring
Yes
Power Retractable Slideout
Yes
Entertainment
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Discs | 1 | - | - | - |
| Speaker Location | Interior / Exterior | RecPro Exterior Speakers | - | - |
| Number Of Televisions | 2 | Insignia LED HD Alexa TV | Shop RV TV's | - |
Specs
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Number Of Discs
1
Speaker Location
Interior / Exterior
Number Of Televisions
2
Entertainment Best Sellers
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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 | - | - | - |
Specs
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Material
Vinyl
Quick Overview
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Parent Company | Winnebago Industries | - | - | - |
| Year | 2018 | - | - | - |
| Make | Grand Design | - | - | - |
| Display Name | Solitude 377MBS | - | - | - |
| Class | Fifth Wheel | - | - | - |
| Max Sleeping Count | 8 | - | - | - |
| Number of Slideouts | 4 | - | - | - |
| Introduction Year | 2016 | - | - | - |
Specs
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Parent Company
Winnebago Industries
Year
2018
Make
Grand Design
Display Name
Solitude 377MBS
Class
Fifth Wheel
Max Sleeping Count
8
Number of Slideouts
4
Introduction Year
2016
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
5.8/10
Base Score
5.0
Spec-based adjustments
Based on Fifth Wheel class averages
+0.8
Final Tow-Ready Score
5.8
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 2018 Grand Design RV Solitude 377mbs, ensure your vehicle's rated tow capacity exceeds its GVWR of 16000 lbs. With a dry weight of 13200 lbs and hitch weight of 2750 lbs, most midsize trucks and SUVs can tow it comfortably with a 10-20% safety margin.
This Fifth Wheel has a dry weight of 13200 lbs and a GVWR of 16000 lbs, giving a payload capacity of lbs for gear, water, and supplies.
The approximate dimensions are length 490 in., width 101 in., and height 161 in. Always confirm clearances for garages, storage, and campsites.
The Solitude 377mbs includes a fresh water capacity of gallons, black water tank(s), and lbs of propane capacity-ideal for off-grid weekends.
Many Solitude 377mbs 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 16000 lbs and dry weight of 13200 lbs, the Solitude 377mbs 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 8 people comfortably - perfect for couples or small families seeking a lightweight, easy-tow Fifth Wheel.
The Solitude 377mbs features body construction with sidewalls and 2 axle(s). Its GVWR of 16000 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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