Rigs / Tiffin / Allegro Bus / 45 OP Tiffin Allegro Bus 45 OP Class A built 2016–18 Better build tier Patient search on the used market
WHAT ONE COSTS
— price not published
The maker never published an MSRP for this floorplan. Unknown is not cheap — treat any asking price against comparable models, not against zero.
THE SPECS
Length 45.0 ft
Height (incl. A/C) 12.6 ft
Width 8.4 ft
Interior height 7.0 ft
GVWR 51,000 lb
Dry weight not published
Sleeps 4
Fresh water 90 gal
Grey water 70 gal
Black water 50 gal
Air conditioning 30,000 BTU
Fuel 150 gal
Generator 10.0-kW Onan Quiet Diesel
A missing row means the maker never published that figure — unknown, not zero.
WHERE PEOPLE SLEEP
1× Rear king bed(Permanent) 72×80 1× Sofa bed(Convertible) — 1× Booth dinette/sleeper(Convertible) — HOW IT'S BUILT — 4/5
Walls Laminated fiberglass
Frame Aluminum
Roof Walk-on
Underbelly Enclosed
Tiffin (Better tier): Tiffin Motorhomes
YEAR BY YEAR — WHAT CHANGED
2016 Introduced 2018 Final model year FINDING ONE
Patient search — weeks of watching, and probably some travel. Estimated from build volume and production span — not a count of live listings.
THE READ
The 45-footer that came just before the OPP; same tag-axle chassis, one less half bath.
OTHER ALLEGRO BUS FLOORPLANS
35 CP · 41,000 lb · sleeps 3 36 AP · 42,000 lb · sleeps 3 36 QSP · 36,600 lb · sleeps 4 37 AP · 41,000 lb · sleeps 4 40 AP · 41,000 lb · sleeps 4 40 IP · 42,000 lb · sleeps 4 40 QBP · 37,600 lb · sleeps 4 40 QXP · 44,600 lb · sleeps 4 40 SP · 40,000 lb · sleeps 4 43 QBP · 54,500 lb · sleeps 4 43 QGP · 50,900 lb · sleeps 4 43 QRP · 54,600 lb · sleeps 4 45 BP · 52,000 lb · sleeps 8 45 FP · 52,000 lb · sleeps 5 the whole line → Is the 45 OP your #1 — or just a spec sheet?
These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about — set your priorities as sliders and watch the whole market re-rank around them. Nothing gets hidden, everything gets explained.
Rank it against your setup → Data compiled from dealer and aggregator listings, retrieved 2026-07.