Bob Tiffin


Tiffin has a history of changing the future.

There’s an art to engineering a motorhome, as elegantly demonstrated in the custom-built PowerGlide chassis. Reflecting decades of Tiffin innovation, the PowerGlide delivers everything an owner could wish for — durability, reliability, performance, and control.


The PowerGlide chassis is custom-built for these models.

Tiffin’s chassis is warranted for three years or 50,000 miles against structural defects in materials and workmanship on the chassis, drive train, and suspension. Five years or 100,000 miles for Cummins ISV5.0 V8 engine, and five years or 200,000 miles on Allison transmission. Plus, since the entire vehicle is Tiffin built, that means one stop service for coach and chassis.

Allegro Bus


Allegro Breeze

Allegro Bus

The coach that launched a chassis.

Offers better floor plan options due to side radiator design

150 gallon fuel tank dual fill

Up to 60 degree wheel turn radius

Hub piloted polished aluminum wheels

Engine transmission options:

Cummins ISL 8.9L 450HP @ 2100 RPM and 1250lb-ft @ 1400 RPM with an Allison Electronic 3000 MH 6-speed automatic with two overdrive gears

Cummins ISX 15L 600 HP @ 1800 RPM and 1950lb-ft @1200RPM with an Allison Electronic 4000 MH 6-speed automatic with two overdrive gears


Equipped to make the right moves.

Available on the 44OH only

Raised rail construction adds an extra 5” in overall height for extra cargo space

Cummins ISL 8.9L 450 HP @ 2100 RPM 1250-ft @ 1400 RPM

Allison Transmission Electronic 3000 MH 6-speed automatic with 2 overdrive gears

100 gallon fuel tank dual fill

Up to 60 degree wheel turn radius

Allegro Breeze

Ready to go when you are.

Only coach this size to use independent front suspension, instead of straight front axle.

First coach to use the new Cummins ISV 5.0L Diesel V8 275HP @ 3200RP and 560lb-ft @ 1600RPM

Hub polished aluminum wheels.

70 gallon fuel tank.

Least amount of overhang for any Tiffin product


Built to go the distance. And then some.

Designed to interface seamlessly with the coach body, the PowerGlide earns outstanding marks in the industry for its durability. Tiffin chose superior components for every step of construction.


Huck Bolts

The chassis is assembled with Grade 8 huck bolts, an industrial strength fastener used by truck manufacturers. Each bolt is hydraulically installed with 26,000 pounds of pressure, ensuring that it can withstand constant vibration and will never need retightening.


Rust Protection

Every part used in Powerglide construction is completely powder coated before installation to safeguard against rust.


Superior Air Line Connections

The incredible strength and durability of brass fittings are used for air line connection, a marked improvement over the plastic connections commonly used in the industry.


Engineered to Amaze

Not all chassis are built the same. The PowerGlide stands out for these features:


Multiplex Wiring

Our multiplexed electrical system with auto reset fuses and relays is the best in the industry. Using less wiring increases reliability, efficiency, and flexibility. It’s also easier to troubleshoot.


Dynamometer Testing

Every chassis undergoes dynamometer testing, which simulates full power road testing. During the process, we assess engine performance, cooling system function, and instrumentation.


Towing Capacity

The RV lifestyle should be what you make it. The PowerGlide allows you to tow all your toys, from jet skis to SUV. The Bus can haul 15,000 lb, the Phaeton, 10,000, and 4,500 for the Breeze.


Superior performance starts from the ground up.

Smart engineering gives the driver confidence behind the wheel. Here’s how we do it:


Smooth ride

Independent front suspension working in tandem with parallelogram rear suspension produces a reassuring stability for a smooth ride and easy handling.


Confident handling

A forward mounted fuel tank places more weight on front tires, giving the chassis a lower center of gravity and better steering control.


Driving comfort

Laser axle alignment ensures the most accurate alignment, supporting driving comfort. Each coach receives multiple alignment checks, on bare chassis and on complete coach.



Air leveling system enhances control with cornering and braking.

ARI Content

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