A little about the 2026 Newmar Supreme Aire
We are proud to present the Supreme Aire as an IWS Signature Series™ build. When you see the IWS Signature Series™ label, you know that it’s the best of the best. The 2026 Supreme Aire elevates every travel experience with its sophisticated design and innovative features. Offering a variety of luxurious interiors and layouts, this coach caters to discerning travelers seeking an unparalleled journey.
Built on the Freightliner P4 Cascadia chassis, available with the Detroit Diesel DD16 Engine with 600hp and 1,850 ft lb. of torque. It comes with the Detroit DT12 12 Speed Automated Manual Transmission which is our favorite transmission for towing performance. Speaking of towing, this coach features a 30,000 lb. towing capacity with tandem rear axles leading the way. This is a beast of a powertrain that can handle anything you throw at it.
Standard Chassis Features
IWS Signature Series™ Freightliner Cascadia P4-116 (Single Rear Axle)
- 525hp DD13 Detroit Diesel Engine 1,850 ft. lb. Torque
- Detroit DT12 12 Speed Detroit Automated Manual Transmission
- GVWR 41,000lb / GCWR 61,000lb
- Includes the Detroit Safety Assurance Collision Mitigation System
- Available for Model 3827 and 4129
- Note - "Chassis Specs Are Subject to Change Without Notice"
IWS Signature Series™ Freightliner Cascadia P4-126 (Tandem Rear Axle)
- 600hp DD16 Detroit Diesel Engine 1,850 ft. lb. Torque
- Detroit DT12 12 Speed Detroit Automated Manual Transmission
- GVWR 58,000lb / GCWR 80,000lb
- Includes the Detroit Safety Assurance Collision Mitigation System
- Available for Model 4341, 4505 and 4540
- Note - "Chassis Specs Are Subject to Change Without Notice"
- Full Double Steel Frame Construction (7/16" Thick Steel)
- 1400 sq Inch Aluminum Radiator for Heavy Duty Applications
- 300 AMP Brushless Pad Mount Alternator for House Battery Charging while Driving
- Bendix Air Disc Front and Rear Brakes
- Michelin X Line Energy Z 315/80R22.5 20 Ply Radial Front Tires
- Michelin X Line Energy Z 295/80R22.5 16 Ply Radial Rear Tires
- Driver Controlled Locking Differential
- LED Headlights
- Anti Lock Braking System
- Chassis Battery Disconnect
- Electronic Stability Control
- Air Horns
- Engine Block Heater
- Power and Heated Remote Control Mirrors
- Power Window and Power Door Locks
- Electronic Cruise Control
- 18" Leather Wrapped Steering Wheel with Tilt & Telescoping Features
- Tire Pressure Monitor
- 5 Year/100,000 mile Chassis Warranty
- 5 Year/100,000 mile Engine Warranty
- 5 Year/Unlimited miles Transmission Warranty
