Thor Motor Coach Four Winds 31B

Name: Thor Motor Coach Four Winds 31B
Brand: Thor Motor Coach

Class Cbuilt 2021–22Mixed build tierFindable 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

Length32.2 ft

Height (incl. A/C)11.2 ft

Width8.3 ft

Interior height7.0 ft

GVWR14,500 lb

Dry weightnot published

Sleeps6

Slide-outs1

Fresh water40 gal

Grey water35 gal

Black water31 gal

Awning18 ft

Fuel55 gal

Engine / chassisFord 7.3L V8 on E-450

A missing row means the maker never published that figure — unknown, not zero.

WHERE PEOPLE SLEEP

1× Rear queen bed(Permanent)60×74
1× 68in jack-knife sofa(Convertible)—
1× 71in Dream Dinette(Convertible)—
1× Cabover bunk(Permanent)54×96

HOW IT'S BUILT — 3/5

WallsLaminated fiberglass

FrameSteel

RoofWalk-on

UnderbellyOpen

Thor Motor Coach (Mixed tier): Thor's volume gas Class C: Vacu-Bond laminated fiberglass body on a welded aluminum cage over a Ford E-450 — decent bones, but Thor's assembly QC and dealer-service record are the weak link.

YEAR BY YEAR — WHAT CHANGED

2021Introduced
2022Discontinued

FINDING ONE

Findable — a few listed nationwide most weeks. Why: Thor Motor Coach is a volume manufacturer; only 2 model years. Estimated from build volume and production span — not a count of live listings.

THE READ

219in-wheelbase rear-queen plan offered for only two model years.

OTHER FOUR WINDS FLOORPLANS

19X · 11,500 lb · sleeps 3 19Z · 11,500 lb · sleeps 3 21Z · 12,500 lb · sleeps 4 22B · 12,500 lb · sleeps 6 22E · 12,500 lb · sleeps 7 22Z · 12,500 lb · sleeps 4 23U · 12,500 lb · sleeps 6 24F · 12,500 lb · sleeps 6 25M · 12,500 lb · sleeps 4 25V · 12,500 lb · sleeps 6 25Z · 12,500 lb · sleeps 4 26B · 12,500 lb · sleeps 8 26X · 14,500 lb · sleeps 6 27P · 14,500 lb · sleeps 6 the whole line →

Is the 31B 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.