01 What makes the 2025 31MBT different
The Eagle HT 31MBT is one of Jayco's Eagle HT fifth wheels, the lighter tier below the full-size Eagle. This page covers one model year of it — the 2025 31MBT, exactly as Jayco published it — because the numbers that decide whether your truck can pull this trailer are not the same from one year to the next. Jayco publishes it at 8' 1" wide closed and 14' 0" with the slide-outs run out for the 2025 model year, which is the measurement that matters for a site pitch as well as for the road.
For the 2025 model year Jayco published a 12,750-pound GVWR on a 10,685-pound dry weight, 2,065 pounds of published cargo capacity, a 2,055-pound dry pin weight. Check the loaded pin against the truck's payload and rear-axle ratings rather than against the tow rating alone. The 2025 coach left the factory on ST235/85R16'E' tyres; the load range in that code is part of the axle rating and a replacement set has to match it.
This is the only 31MBT model year with a verified factory record in this catalogue.
A 2025 coach is close to current as of 2026, but section 05 still applies: check it against its build date rather than its model year. Jayco commonly builds a model year well before the calendar year turns, and the tyre date codes have to be read against the build month, not the badge.
How the 31MBT differs from the other 51 Eagle fifth wheels. Most distinctive first. Sibling pages may cover other model years than this one (2025). How these ranks are worked out.
- Sleeping capacity, 7: shared with the 31MB, 31QBH and 31QCD; of 37, 29 smaller and four larger, nearest the 27RS, 29DDB and four others (6) and the 28BHU, 34MBL and 355MBQS (8).
- Interior height, 6 ft 2 in: lowest of 46, level with the 25.5REOK, 27.5RLTS and nine others; next is the 28RKS (6 ft 3 in).
- Length, 37 ft 6 in: shared with the 31MB; of 44, 31 shorter and eleven longer, nearest the 34MBL (37 ft 3 in) and the 327CKTS and 335RDOK (37 ft 11 in).
- Dry weight, 10,685 lb: nineteenth-heaviest of 52, between the 325MKTS (10,645 lb) and the 31MB (10,690 lb).
- Dry pin weight, 2,055 lb: twentieth-heaviest of 52, between the 31MB (2,025 lb) and the 29CBD (2,075 lb).
- Cargo capacity as a share of GVWR, 16.2%: shared with the 30CRT, 317RLOK and two others; of 51, fourteen smaller and 32 larger, nearest the 29DDB (16%) and the 26REC and 335RDOK (16.4%).
- Exterior height, 12 ft 4 in: shared with the 27MLC, 27RL and three others; of 35, sixteen lower and thirteen taller, nearest the 24MLE, 25RUC and eight others (12 ft 3 in) and the 29DDB (12 ft 5 in).
- GVWR, 12,750 lb: shared with the 31MB; of 52, 32 lower and eighteen higher, nearest the 30.5MBOK (11,950 lb) and the 325MKTS (12,900 lb).
- Cargo capacity, 2,065 lb: 25th-smallest of 52, between the 31MB (2,060 lb) and the 336FBOK (2,068 lb).
- Dry pin weight as a share of dry weight, 19.2%: shared with the 27RS, 321RSTS and 355MBQS; of 52, 23 smaller and 25 larger, nearest the 336FBOK (19%) and the 28RLT, 327CKTS and 370FBTS (19.3%).
- Fresh tank, 52 gal: shared with the 24MLE, 25RUC and thirteen others; of 52, thirteen smaller and 23 larger, nearest the 28BHU, 28RKS and 31QBH (51 gal) and the 325BHQS, 327CKTS and 339FLQS (75 gal).
- Grey tank, 82 gal: shared with the 24MLE, 25RUC and eighteen others; of 52, fourteen smaller and seventeen larger, nearest the 27RL and 27RS (80 gal) and the 317RLOK, 319MLOK and thirteen others (87 gal).
- Black tank, 45 gal: shared with the 24MLE, 25RUC and eighteen others; of 52, fourteen smaller and seventeen larger, nearest the 27RL and 27RS (43 gal) and the 317RLOK, 319MLOK and nine others (50 gal).
Next to the 325MKTS (2026 page), the nearest lighter floorplan by dry weight, the 31MBT is 40 lb heavier by dry weight, has a GVWR 150 lb lower, has 190 lb less cargo capacity, has a dry pin weight 26 lb lighter, is 2 ft 10 in longer, stands 3 in lower, has 2 ft 6 in less interior height, has a fresh tank 29 gal smaller, has a grey tank 5 gal smaller, has a black tank 5 gal smaller and sleeps five more.
Next to the 31MB (2023–2024 page), the nearest heavier floorplan by dry weight, the 31MBT is 5 lb lighter by dry weight, has 5 lb more cargo capacity, has a dry pin weight 30 lb heavier, has 1 ft 9 in less interior height and has a fresh tank 29 gal smaller; the two publish the same GVWR, length, exterior height, grey tank, black tank and sleeping capacity.
Specifications by model year
2025 is the only model year this catalogue holds a verified factory record for the 31MBT. That record is published here on its own, and it is not a general specification for the floorplan: Jayco revises published weights, ratings and even tire sizes from one model year to the next, so every figure below is evidence about 2025 and about no other year.
| Model year | Dry (UVW) | GVWR | Cargo (CCC) | Dry pin | Sleeps | Tire size |
|---|---|---|---|---|---|---|
| 2025 | 10,685 | 12,750 | 2,065 | 2,055 | 7 | ST235/85R16'E' |
The row above is the 2025 model year’s own record from Jayco’s model page for that year. When a second model year is sourced for this floorplan, it joins the table above on this same page and at this same address — nothing moves and no link breaks. The figures in the tow-critical placard at the top of this page are that same 2025 record. On the weights, overall length and tire size, that record and Jayco’s own 2025 model page agree on every field both of them publish. Exterior height is not compared: Jayco publishes a bare height, a with-A/C height and a with-2nd-A/C height, and the single height row carried here cannot be matched to one of them, so no claim is made either way.
02 Full 2025 specifications
Dimensions
- Exterior length
- 37' 6"
- Exterior width
- 8' 1"
- Width, slides out
- 14' 0"
- Exterior height
- 12' 4"
- Exterior height (w/ A/C)
- 12' 6"
- Interior height (main)
- 6' 2"
Weights
- Dry / unit base weight (UVW)
- 10,685 lbs
- GVWR (max loaded)
- 12,750 lbs
- Net cargo / payload (CCC)
- 2,065 lbs
- Dry pin weight
- 2,055 lbs
Running gear
- Tire size
- ST235/85R16'E'
- Hitch type
- Fifth-wheel (in-bed)
- Model year of record
- 2025
Capacities
- Fresh water
- 52 gal
- Grey water
- 82 gal
- Black water
- 45 gal
- LP / propane
- 60 lbs
- LP / propane, optional
- 80 lbs
Galley & systems
- Water heater
- Not published
- Furnace output
- 35000 BTU
- Furnace, auto-ignition
- Not published
- Outside storage compartments
- 1
Sleeping
- Sleeps
- up to 7
How these published figures sit against the rest of the catalogue: fifth wheel pin weight and payload; fresh, grey and black tank sizes; camper trailer size chart.
Federal tire recalls naming this size. NHTSA’s recall file names ST235/85R16 in one tire recall: 21T018000 (Sailun Tire Americas, Inc., 2021; make SAILUN; models BLACKHAWK, BLACKLION, IRONHEAD, ROADX, SAILUN). A tire recall covers only the brands, lines and DOT date codes it lists, and this page does not know which brand of tire this trailer was built with, so read the brand and DOT code on your own sidewalls before relying on this list. Only 242 of NHTSA’s 788 tire recalls name a size in their summary, so a size with no match is not a clean record (NHTSA recall file, read 12 Oct 2026).
Drawn to scale
Weight budget
Size, with end view
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
Towing it
Check your vehicle. Enter the ratings from your owner’s manual and the door-pillar placard.
Compares your figures with this page’s published GVWR (12,750 lb) and the upper loaded pin estimate (3,188 lb, a rule of thumb). Your vehicle’s placard and the trailer’s own weight label govern.
Loaded range: 15–25% of GVWR on the pin, a rule of thumb, not a measurement of this unit. No truck ratings or hitch classes (why; NHTSA, DOT HS 809 433). The range starts at the published dry figure, because loaded is never lighter than dry.
04 Buying a 2025 31MBT at 1 model years old
Tyres are the first thing to age out
RV tyres are usually replaced on age rather than tread, at roughly five to seven years from the DOT date code on the sidewall. On a 1-year-old coach the originals (ST235/85R16'E') may still be fitted — read the four-digit date code, not the tread.
Roof and seam sealant is on a service interval
Laminated-wall fifth wheels rely on sealant at every roof penetration and along the front cap. Inspection is typically annual and re-sealing every few years; ask for the service records rather than assuming.
Weigh it before you tow it
Every weight on this page is a DRY factory figure for the 2025 model year. A used coach carries its previous owner's additions, and a fifth wheel puts roughly 15-25% of the load through the truck's rear axle. Weigh the loaded rig at a public scale and check it against the truck's payload, rear-axle and hitch ratings.
05 How it compares
Every Eagle HT floorplan this catalogue holds a verified factory record for, with its own published weights.
06 Loading it for a trip
A full 52-gallon fresh tank is about 432 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 21% of the 31MBT’s 2,065 lb cargo capacity, leaving 1,633 lb (233 lb per rated berth). Across 52 Eagle fifth-wheel floorplans the water share runs 16% to 34%, and 43 give up more than this one. Nearest on that share: Eagle 30.5CKTS at 20% and Eagle 27.5RLTS at 21%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).
07 Where this floorplan sits
Closest sibling: the Eagle 31QCD, nearest on the published figures. It differs on 5 of the 9 fields both publish (this plan first): length 37 ft 6 in vs 36 ft 6 in; dry weight 10,685 lb vs 9,835 lb; GVWR 12,750 lb vs 11,700 lb; cargo capacity 2,065 lb vs 1,865 lb; hitch weight 2,055 lb vs 2,080 lb. They match on sleeps, fresh tank, grey tank and black tank.
| Eagle fifth-wheel plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 12,750 | 33–34 of 52 | 9,500–15,400 |
| Dry weight (lb) | 10,685 | 34 of 52 | 7,460–13,030 |
| Cargo capacity (lb) | 2,065 | 25 of 52 | 1,455–2,625 |
| Hitch weight (lb) | 2,055 | 33 of 52 | 1,150–2,695 |
| Length | 37 ft 6 in | 32–33 of 44 | 28 ft 6 in–43 ft 1 in |
| Fresh tank (gal) | 52 | 14–29 of 52 | 48–81 |
| Grey tank (gal) | 82 | 15–35 of 52 | 65–95.5 |
| Black tank (gal) | 45 | 15–35 of 52 | 32.5–87 |
| Sleeps | 7 | 38–41 of 52 | 2–10 |
Either side of it by GVWR: Eagle 31MB matches it at 12,750 lb GVWR; Eagle 325MKTS is 150 lb heavier (12,900 lb GVWR).
| Nearest Eagle fifth-wheel siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Eagle 31MBT | 37 ft 6 in | 7 | 10,685 | 12,750 | 2,065 | 2,055 | 52 |
| Eagle 31QCD | 36 ft 6 in | 7 | 9,835 | 11,700 | 1,865 | 2,080 | 52 |
| Eagle 31QBH | — | 7 | 9,690 | 11,700 | 2,010 | 1,965 | 51 |
| Eagle 31MB | 37 ft 6 in | 7 | 10,690 | 12,750 | 2,060 | 2,025 | 81 |
| Eagle 34MBL | 37 ft 3 in | 8 | 9,810 | 11,700 | 1,890 | 1,820 | 52 |
| Eagle 29CBD | 34 ft 8 in | 9 | 9,525 | 11,450 | 1,925 | 2,075 | 52 |
All 80 Eagle floorplans: Eagle line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| 31MBT | 12,750 | 10,685 | 7 | 37 ft 6 in |
| Columbus 340RG | 12,870 | 10,464 | — | 34 ft 8 in |
| Roamer 32RLTS | 13,200 | 11,050 | 4 | 36 ft 7 in |
| Cardinal 32CHILL | 12,188 | 9,688 | — | 35 ft 3 in |
| Arctic Wolf 3250SUITE | 12,040 | 9,668 | — | 36 ft 1 in |
| Wildcat 32LIVE | 13,500 | 10,363 | — | 36 ft 5 in |
| Open Range 3X 287RLS | 13,900 | 11,670 | 4 | 34 ft 7 in |
Against the 31MBT: the Columbus 340RG is 120 lb heavier and 3 ft shorter; the Roamer 32RLTS is 450 lb heavier and sleeps 3 fewer; the Cardinal 32CHILL is 562 lb lighter and 2 ft shorter.
08 Common questions about the 31MBT
How much does the 31MBT weigh?
10,685 lb dry; 12,750 lb GVWR, the most it may weigh loaded.
How much can the 31MBT carry?
2,065 lb, 16% of its GVWR (median across 238 fifth wheels here: 18%). A full fresh tank uses 432 lb of it.
What is the pin weight of the 31MBT?
2,055 lb dry, 19% of the dry weight (median across 406 fifth wheels here: 19%).
What size tow vehicle does the 31MBT need?
A tow rating of at least 12,750 lb, plus payload for the loaded pin weight, passengers and cargo.
How many people does the 31MBT sleep?
It is rated to sleep up to 7. 11 of the 52 Eagle fifth-wheel floorplans that publish a count sleep more.
What are the tank capacities on the 31MBT?
Fresh 52, grey 82, black 45 gallons. Off hookups, fresh water runs out first.
How long is the 31MBT?
37' 6" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
13 of the 18 fields this catalogue tracks are published for the 31MBT. Not published: slide count, axle count, awning, refrigerator, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: jayco.com, library.rvusa.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 43 recall campaigns and 79 owner complaints (model years 2005 on) against the Eagle line (a recall and a complaint are not the same thing).
What to look at on a used one. Across the 79 complaints filed on this line the most-reported components are structure (23%), tires (19%) and equipment (15%).
Recall coverage here is not complete, and complaints are owners’ unverified reports (how this record is built). Check a specific VIN at NHTSA before you buy. Full tables are on the Eagle line page.