Tiffin’s exclusive PowerGlide® Chassis is the foundation of superior performance, comfort, and reliability in our luxury motorhomes. Engineered for power, and optimized for performance, the PowerGlide sets the standard for strength and durability, delivering a smoother ride, tighter handling, and uncompromised towing power. Built specifically to support the weight and balance of Tiffin coaches, it allows for precise control, enhanced safety, and easier serviceability—giving owners confidence mile after mile. It’s more than a chassis; it’s the backbone of the Tiffin difference.
A. Cummins Engine
Cummins L9 offers 450HP (Standard on Phaeton and Allegro Bus)
Cummins X15 offers 605HP with a hitch rating up to 20,000 lbs. (Standard on Zephyr. Optional on Allegro Bus with tag)
B. UltraSteer
Precision-tuned tag axles follow the ideal turning path, eliminating tire scrub and reducing curb-to-curb turning radius by up to 17%. UltraSteer is rated at 14,000 lbs on Allegro Bus and Zephyr, and 10,000 lbs on Phaeton.
- 12-degree wheel cut allows tag axle to follow the ideal turning path of the coach.
- Outboard-mounted shocks offer best-in-class roll stability, greatly enhancing ride and handling.
- Auto-locks at 20mph and in reverse; locking pin utilizes air chamber and dedicated plate for increased safety.
(Standard on Phaeton, Allegro Bus, and Zephyr with tag axle)
C. V-Ride
- More towing capacity and consistent handling.
- V-Blade connection dissipates suspension forces—reducing stress for greater durability and longevity.
- Transverse beam integrated with the trailing arm form a single-piece U-shaped assembly—enhancing stability at all speeds while adding durability and reducing maintenance.
(Standard on Phaeton, Allegro Bus, Zephyr)
D. Super Raised Rail
The Super Raised Rail delivers maximum basement storage and a flat coach floor from end to end; 5/16” rail with 5/16” liners.
Having the Super Raised Rail gives you an additional 6″ of basement storage height compared to a conventional raised rail chassis.
(Standard on Phaeton, Allegro Bus, Zephyr)
E. DriveTech
- OPTIVIEW® ALL-DIGITAL INSTRUMENT CLUSTER
- INSTRUMENT CONTROLS
- LEFT HAND COLUMN CONTROLS (Windshield wipers, headlights and turn signals)
- PUSH-TO-START BUTTON & KEY FOB (Zephyr only)
- ROADWATCH (Adaptive cruise, collision mitigation, roll stability, electronic stability and automatic traction control)
- RIGHT HAND COLUMN CONTROLS (Controls transmission and engine brake)
- PHONE CONTROLS, CRUISE CONTROL
AND HEADLIGHTS
(Standard on Phaeton, Allegro Bus, Zephyr)
F. RoadWatch
Roadwatch is the ultimate RV Safety System, assisting the driver with control of the coach in all road conditions and maneuvers.
Fully integrated with the Optiview digital dash, RoadWatch features:
- Roll Stability
- Traction Control
- Collision Mitigation
- Adaptive Cruise Control
- Mobileye (Allegro Bus and Zephyr)
(Standard on Phaeton, Allegro Bus, Zephyr)
G. Koni Shocks
Adjusted the shock valving for a balanced ride — stiff enough to avoid impact but soft enough to prevent bouncing.
These custom shocks offer +/-3” suspension travel for optimal road handling.
(Standard on Phaeton, Allegro Bus, Zephyr)
H. Independent Front Suspension
With Automotive-Like Feel and Maneuverability
The PowerGlide XC/SL Chassis features an independent front suspension that delivers one of the tightest turns in the RV industry.
- Up to 60-degree wheel cut offers superior maneuverability and turning radius
- Double A-frame design offers smooth ride and refined handling
- Excellent center feel and steering response
- Front air-disc brakes with ABS help maintain control and significantly decrease stopping distance
(Standard on Phaeton, Allegro Bus, Zephyr)
I. All-Wheel Disc Brakes
All-wheel disc brakes eliminate brake fade and provide smooth, responsive performance for complete confidence when slowing or stopping. Available on PowerGlide SL only.
J. Trueline Leveling System
Valid’s Trueline Leveling System uses a touchscreen one-step leveling system, removes chassis twist, has a Tank Tilt feature to facilitate tank evacuation and advanced diagnostics for quick and easy troubleshooting.
(Standard on Allegro Bus & Zephyr)
Industry Leading Warranty
The RV industry’s most comprehensive service and support coverage with an industry-leading warranty, 450+ Freightliner service locations, 90+ Oasis RV specialist locations and 24/7 Factory-Direct support for the life of the coach.
Confidence in Every Turn
- Steering assist adapts to driving conditions including road crowning and crosswinds for safer operation at highway speeds.
- Better handling and directional control in adverse road conditions
- Reduces body roll and improves handling in tight turns and high-speed cruising.
- Powered steering assist reduces driver fatigue
- Steering automatically returns to the center, for smooth operation
- Ergonomic tilt/telescoping steering column with available memory settings (Zephyr only).
BrakeSync is the only factory-installed, factory-warranted integrated air supply for your tow vehicle brake system on an FCCC chassis.
Features
- Black rear-mounted air coupler blends into the hitch area and dust cap ensures the hookup stays clean when not in use.
- More automotive-style mounting and air connection with quick disconnect — not an off-the-shelf system.
- Low air warnings are easily visible through a direct connection to DriveTech via the OptiView digital dash.
- Easy-to-use moisture drain complies with FMVSS standards and provides more preventative maintenance and safety features than other chassis-supplied systems.