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2013 Entegra Cornerstone 45K

An In-Depth Review of Entegra Coach's Flagship Motorhome
Article Date: June, 2012


Road Test

Once we were thoroughly acquainted with the Cornerstone and its features and controls it was time to hit the road. The 600hp Cummins ISX was a whole new experience and the Cornerstone quickly came up to speed. With 1,950 lb-ft of torque, losing speed when climbing a grade is a thing of the past. The disc brakes on all three axles easily hauled the coach to a stop.

Maneuverability was excellent. It seems like all Entegra coaches handle just a bit better than the typical coach. The addition of their X frame bracing and structural upgrades just allow the suspension to do its job that much better, while still offering the smooth ride one would expect from a coach of this caliber.

The chassis stiffening, plus the wooden floor sub-structure, absorbed any jolts from potholes or vibrations from the road. The suspension did all of the work and the coach body just rode along as smooth as can be. The noise from the road was dampened by the floor structure and high levels of insulation. Clean aerodynamics, especially noticed in the flush mounted windows, further reduced any noise at highway speeds. When you combine the handling with the quiet ride that we experienced the Cornerstone is truly the benchmark that will be hard to beat.

Cornerstone 45K Floorplan


2013 Entegra Coach Cornerstone 45K

Standard Features:

  • Three 15,000 BTU AC units with heat pumps
  • 23 cubic inch residential refrigerator with ice and water dispenser
  • 40" midship LCD TV with entertainment center
  • 26" front overhead LCD TV
  • Six way power cockpit seats with integral lap and shoulder belts
  • Two burner electric glass cooktop with convection microwave oven
  • Dual 2800 and 2000 watt pure sine wave inverters with 8 AGM batteries
  • 32" bedroom LCD TV
  • Winegard in-motion satellite dome
  • In-dash GPS navigation system
  • Hadley air leveling system
  • Equalizer Systems dual acting leveling jacks
  • 32" exterior LCD TV in galley slide
  • Aqua-Hot hydronic heating system
  • Onan 12,500 watt diesel generator
  • Fisher-Paykel dishwasher drawer
  • Stackable washer/dryer
  • Built-in central vacuum system with dust pan
  • King bed with Select Comfort Mattress
  • Sony surround sound system

Price as Tested $557,721 (MSRP)


Gross Vehicle Weight: 50,600 lbs.
Gross Combined Weight Rating: 65,600 lbs.
Trailer Hitch Capacity: 15,000 lbs.
Wheelbase: 320 inches
Overall Length: 45 feet 1 inch
Overall Width: 101 inches
Overall Height: 12 feet 11 inches
Fresh Water: 100 gallons
Gray Water: 60 gallons
Black Water: 60 gallons
Chassis: Spartan K3 rear engine diesel
Front Axle: 16,600 lb IFS, Air-ride
Drive Axle: 23,000 lb Air-ride
Tag Axle: 14,000 lb Air-ride Brakes: Air disc, all three axles
Fuel Tank: 150 gallons
Trailer Hitch Capacity: 15,000 lbs.
Engine: Cummins ISX15 with 3 speed compression brake
Horsepower: 600 HP at 1,800 RPM
Torque: 1,950 lb-ft at 1,400 RPM
Transmission: Allison 4000 series 6 speed automatic


Entegra Coach
(800) 945-4787

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