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Thor Motor Coach Quantum WS31

Class Cbuilt 2016–25Mixed build tierCommon 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
Length32.3 ft
Height (incl. A/C)11.2 ft
Width8.3 ft
Interior height7.0 ft
GVWR14,500 lb
Dry weightnot published
Sleeps5
Fresh water40 gal
Grey water28 gal
Black water28 gal
Awning16 ft
Fuel55 gal
Engine / chassisFord E-450 7.3L V8

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

WHERE PEOPLE SLEEP
  • 1× rear queen bed(Permanent)60×75
  • 1× cab-over bunk(Permanent)52×96
  • 1× jack-knife sofa(Convertible)—
  • 1× 70 in dream dinette(Convertible)—
HOW IT'S BUILT — 3/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyOpen

Thor Motor Coach (Mixed tier): Thor Motor Coach

YEAR BY YEAR — WHAT CHANGED
  • 2016Introduced
  • 2021Ford 7.3L V8 replaces the 6.8L V10
  • 2025Final model year
FINDING ONE

Common — usually several for sale within a day’s drive. Why: Thor Motor Coach is a volume manufacturer; 10-year production run. Estimated from build volume and production span — not a count of live listings.

THE READ

Ten-year run as the non-bunk sibling of the LF31; dropped for 2026.

OTHER QUANTUM FLOORPLANS
CR24 · 11,030 lb · sleeps 5DS24 · 11,030 lb · sleeps 3GL24 · 12,125 lb · sleeps 4GR22 · 12,500 lb · sleeps 5HS31 · 14,500 lb · sleeps 5JM31 · 14,500 lb · sleeps 5KM24 · 11,030 lb · sleeps 5KW29 · 14,500 lb · sleeps 5LC19 · 11,500 lb · sleeps 3LC21 · 12,500 lb · sleeps 4LC22 · 12,500 lb · sleeps 5LC25 · 12,500 lb · sleeps 5LC26 · 14,500 lb · sleeps 5LC28 · 14,500 lb · sleeps 5the whole line →
Is the WS31 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.