2021 Entegra Coach Cornerstone 45w Specs
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Can Your Vehicle Tow This?
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Get Your Real Numbers
Tow rating is one limit — payload is what overloads first
The full calculator factors in:
Tongue weight vs payload
Water tanks (50 gal = 417 lbs)
Propane (40 lbs full)
Passengers in truck
Gear, bikes, coolers, tools
Cargo weight distribution
Your truck's payload limit carries tongue weight, passengers, and everything in the bed — that's the number that overloads first. The calculator checks both tow and payload with real gear weights.
Towing & Dimensions
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| GVWR | 54000 lbs | - | - | - |
| Length | 539 in | - | ||
| Width | 101 in | - | ||
| Exterior Height | 155 in | - | ||
| Interior Height | 84 in | - | ||
| Towing Capacity | 20000 / 9072 lbs | - | - | - |
Specs
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GVWR
54000 lbs
Length
539 in
Width
101 in
Exterior Height
155 in
Interior Height
84 in
Towing Capacity
20000 / 9072 lbs
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Electrical & Solar
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Shore Power | 30 Amps | - | ||
| Battery Type | 12V Lead-Acid | Top 5 | ||
| Solar Pre-Wired | Optional | - | ||
| Inverter | Optional | - |
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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 | 100 gal | - | - | |
| Gray Water Tank Capacity | 62 gal | - | - | - |
| Black Water Tank Capacity | 41 gal | - | - |
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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
100 gal
Gray Water Tank Capacity
62 gal
Black Water Tank Capacity
41 gal
Tank Capacities Best Sellers
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Tires & Wheels
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Front Brake Type | Hydraulic Disc | - | - | - |
| Front Tire | Michelin® XZA 365/70R 22.5 Full Spec | - | - | - |
| Front Tire Aspect Ratio | 70 | - | - | - |
| Front Tire Width | 365 | - | - | - |
| Front Wheel Diameter | 22.5 | - | - | - |
| Rear Brake Type | Hydraulic Disc | - | - | - |
| Rear Tire | Michelin® X Line Energy Z 315/80R 22.5 Full Spec | - | - | - |
| Rear Tire Aspect Ratio | 80 | - | - | - |
| Rear Tire Width | 315 | - | - | - |
| Rear Wheel Diameter | 22.5 | - | - | - |
| Tire Brand | Michelin® | - | - | - |
| Wheelbase | 320 / 8128 in | - | - | - |
| Wheels Composition | Aluminum | - | - | - |
Specs
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Front Brake Type
Hydraulic Disc
Front Tire
Michelin® XZA 365/70R 22.5 Full Spec
Front Tire Aspect Ratio
70
Front Tire Width
365
Front Wheel Diameter
22.5
Rear Brake Type
Hydraulic Disc
Rear Tire
Michelin® X Line Energy Z 315/80R 22.5 Full Spec
Rear Tire Aspect Ratio
80
Rear Tire Width
315
Rear Wheel Diameter
22.5
Tire Brand
Michelin®
Wheelbase
320 / 8128 in
Wheels Composition
Aluminum
Tires & Wheels Best Sellers
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Heating & Cooling
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Air Conditioning Type | Automatic | - | ||
| Heater Type | Automatic | - | ||
| Water Heater Pump Power Mode | Electrical | - | - | - |
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Air Conditioning Type
Automatic
Heater Type
Automatic
Water Heater Pump Power Mode
Electrical
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Living Room / Bedroom(s)
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Full Size Master Bedroom Closet | Yes | - | - | - |
| Living Area Location | Front | - | - | - |
| Master Bedroom Door Style | Full Sliding Door | - | - | - |
| Master Bedroom Flooring Type | Tile | - | - | - |
| Master Bedroom Location | Center | - | - | - |
| Master Bedroom Mirror Doors | Yes | - | - | - |
| Master Bedroom Shades / Curtains | Yes | - | - | - |
| Number Of Convertible / Sofa Beds | 2 | - | - | - |
| Number Of King Size Beds | 1 | - | - | - |
| Number Of Sofas | 2 | - | - | |
| Reclining Sofa | No | - | ||
| Sofa Material | Leather | - | - | - |
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Full Size Master Bedroom Closet
Yes
Living Area Location
Front
Master Bedroom Door Style
Full Sliding Door
Master Bedroom Flooring Type
Tile
Master Bedroom Location
Center
Master Bedroom Mirror Doors
Yes
Master Bedroom Shades / Curtains
Yes
Number Of Convertible / Sofa Beds
2
Number Of King Size Beds
1
Number Of Sofas
2
Reclining Sofa
No
Sofa Material
Leather
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Kitchen / Dining
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Kitchen / Living Area Flooring Type | Tile | - | - | - |
| Kitchen Location | Center | - | - | - |
| Kitchen Table Configuration | Chairs | - | - | - |
| Number Of Oven Burners | 2 | - | - | - |
| Refrigerator Power Mode | Electric | - | - | - |
| Refrigerator Size | Full-Size | - | - | - |
Specs
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Kitchen / Living Area Flooring Type
Tile
Kitchen Location
Center
Kitchen Table Configuration
Chairs
Number Of Oven Burners
2
Refrigerator Power Mode
Electric
Refrigerator Size
Full-Size
Bathroom
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Bathroom Flooring Type | Tile | - | - | - |
| Bathroom Location | Rear / Center | - | - | - |
| Number Of Bathrooms | 2 | - | - | - |
| Toilet Type | Porcelain | Top 5 |
Specs
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Bathroom Flooring Type
Tile
Bathroom Location
Rear / Center
Number Of Bathrooms
2
Toilet Type
Porcelain
Bathroom Best Sellers
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Exterior
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| 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 | JBL | - | - | - |
| Body Material | Aluminum | - | - | - |
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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
JBL
Body Material
Aluminum
Exterior Best Sellers
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Options
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Air Conditioning Prewiring | Yes | - | ||
| Battery Power Converter | Yes | - | - | - |
| Bunkhouse | No | - | - | - |
| Cable Prewiring | Yes | - | - | - |
| Heat Prewiring | Yes | - | - | - |
| Interior Wood Finish | Yes | - | - | - |
| Metallic | No | - | - | - |
| Overdrive | Yes | - | - | - |
| Overhead Fan | Yes | - | - | |
| Phone Prewiring | No | - | - | - |
| Power Adjustable Seat | Yes | - | - | - |
| Power Retractable Awning | Yes | - | - | - |
| Power Retractable Slideout | Yes | - | - | - |
| Reclining Seats | Yes | - | - | - |
| Refrigerator | Standard | - | - | - |
| Satellite | Yes | - | - | - |
| Satellite Prewiring | Yes | - | - | - |
| Screened Room | No | - | - | - |
| Seat Armrests | Yes | - | - | - |
| Sliding Glass Door | No | - | - | - |
| Supercharged | No | - | - | - |
| Surround Sound | Yes | - | - | - |
| Swivel Seats | Yes | - | - | - |
| Turbocharged | Yes | - | - | - |
| TV Antenna Prewiring | Yes | - | - | - |
| Wallpaper | Yes | - | - | - |
| Washer / Dryer Prewiring | Yes | - | - | - |
| Water Heater Tank Bypass | Yes | - | - | - |
Specs
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Air Conditioning Prewiring
Yes
Battery Power Converter
Yes
Bunkhouse
No
Cable Prewiring
Yes
Heat Prewiring
Yes
Interior Wood Finish
Yes
Metallic
No
Overdrive
Yes
Overhead Fan
Yes
Phone Prewiring
No
Power Adjustable Seat
Yes
Power Retractable Awning
Yes
Power Retractable Slideout
Yes
Reclining Seats
Yes
Refrigerator
Standard
Satellite
Yes
Satellite Prewiring
Yes
Screened Room
No
Seat Armrests
Yes
Sliding Glass Door
No
Supercharged
No
Surround Sound
Yes
Swivel Seats
Yes
Turbocharged
Yes
TV Antenna Prewiring
Yes
Wallpaper
Yes
Washer / Dryer Prewiring
Yes
Water Heater Tank Bypass
Yes
Cabin Specs
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Rows | 1 | - | - | - |
| Number Of Seats | 2 | - | - | - |
| Seat Material | Leather | - | - | - |
| Seat Specifications | Standard | - | - | - |
| Seat Type | Bucket | - | - | - |
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Number Of Rows
1
Number Of Seats
2
Seat Material
Leather
Seat Specifications
Standard
Seat Type
Bucket
Chasis
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Chassis Brand | Spartan | - | - | - |
| Chassis Model | K3 | - | - | - |
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Chassis Brand
Spartan
Chassis Model
K3
Drivetrain
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Driveline Type | 4X2 | - | - | - |
| Number Of Speeds | 6 | - | - | - |
| Transmission Brand | Allison | - | - | - |
| Transmission Type | Automatic | - | - | - |
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Driveline Type
4X2
Number Of Speeds
6
Transmission Brand
Allison
Transmission Type
Automatic
Engine
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Carburetion | Standard | - | - | - |
| Carburetion Type | Fuel Injected | - | - | - |
| Cylinders | 6 | - | - | - |
| Engine Brand Name | Cummins | - | - | - |
| Engine Type | I6 Diesel Pusher | - | - | - |
| Horsepower | 605 bhp | - | - | - |
| Horsepower RPM | 1800 | - | - | - |
| Torque | 2646 Nm | - | - | - |
| Torque RPM | 1200 | - | - | - |
Specs
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Carburetion
Standard
Carburetion Type
Fuel Injected
Cylinders
6
Engine Brand Name
Cummins
Engine Type
I6 Diesel Pusher
Horsepower
605 bhp
Horsepower RPM
1800
Torque
2646 Nm
Torque RPM
1200
Entertainment
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Discs | 1 | - | - | - |
| Number Of Televisions | 4 | - | ||
| Speaker Location | Interior / Exterior | - | - | |
| Television Brand Name | Samsung | - | - | - |
Specs
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Number Of Discs
1
Number Of Televisions
4
Speaker Location
Interior / Exterior
Television Brand Name
Samsung
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Fuel & MPG
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Fuel Capacity | 150 / 567.8 gal/l | - | - | |
| Fuel Type | Diesel | - | - |
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Fuel Capacity
150 / 567.8 gal/l
Fuel Type
Diesel
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Instrumentation
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| GPS Brand | Rand McNally | - | - | |
| Number Of Radios | 2 | - | - | - |
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GPS Brand
Rand McNally
Number Of Radios
2
Quick Overview
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Parent Company | Thor Industries | - | - | - |
| Year | 2021 | - | - | - |
| Make | Entegra Coach | - | - | - |
| Display Name | Cornerstone 45W | - | - | - |
| Class | Class A | - | - | - |
| Max Sleeping Count | 8 | - | - | - |
| Number of Slideouts | 4 | - | - | - |
| Introduction Year | 2017 | - | - | - |
Specs
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Parent Company
Thor Industries
Year
2021
Make
Entegra Coach
Display Name
Cornerstone 45W
Class
Class A
Max Sleeping Count
8
Number of Slideouts
4
Introduction Year
2017
Essential Upgrades for the 2021 Entegra Coach Cornerstone 45w
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 class a.
Drivability & Handling
4.3/10
Base Score
5.0
Spec-based adjustments
Based on Class A class averages
-0.7
Final Drivability & Handling
4.3
Living Space & Layout
7.3/10
Base Score
5.0
Spec-based adjustments
Based on Class A class averages
+2.3
Final Living Space & Layout
7.3
Comfort & Features
6.3/10
Base Score
5.0
Spec-based adjustments
Based on Class A class averages
+1.3
Final Comfort & Features
6.3
Storage Space
5.0/10
Base Score
5.0
Spec-based adjustments
Based on Class A class averages
+0.0
Final Storage Space
5.0
Off-Grid & Campsites
6.0/10
Base Score
5.0
Spec-based adjustments
Based on Class A class averages
+1.0
Final Off-Grid & Campsites
6.0
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 2021 Entegra Coach Cornerstone 45w, ensure your vehicle's rated tow capacity exceeds its GVWR of 54000 lbs. With a dry weight of lbs and hitch weight of lbs, most midsize trucks and SUVs can tow it comfortably with a 10-20% safety margin.
This Class A has a dry weight of lbs and a GVWR of 54000 lbs, giving a payload capacity of lbs for gear, water, and supplies.
The approximate dimensions are length 539 in., width 101 in., and height 155 in. Always confirm clearances for garages, storage, and campsites.
The Cornerstone 45w includes a fresh water capacity of gallons, black water tank(s), and lbs of propane capacity-ideal for off-grid weekends.
Many Cornerstone 45w 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 54000 lbs and dry weight of lbs, the Cornerstone 45w 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 Class A.
The Cornerstone 45w features body construction with sidewalls and 2 axle(s). Its GVWR of 54000 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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