01 What makes it unique
Forest River lists the 2026 Sierra 3550BH at 12,044 lb dry, a GVWR of 15,500 lb, a net carrying capacity of 3,456 lb and a pin weight of 2,380 lb. Its dry weight plus its carrying capacity comes to exactly its GVWR.
It is 43' 6" long and 13' 4" high. Forest River prints its tanks as 50 gal fresh, 132 gal grey, 100 gal black.
Every number on this page was read on 7 Nov 2026 from Forest River’s own 2026 Sierra Fifth Wheels floorplan page for the Sierra 3550BH, whose heading names the model year 2026.
How the 3550BH differs from the other Sierra Fifth Wheel. How these ranks are worked out.
Next to the 3370RLS, the nearest lighter floorplan by dry weight, the 3550BH is 1,725 lb heavier by dry weight, has a GVWR 1,940 lb higher, has 215 lb more cargo capacity, has a pin weight 820 lb heavier, is 7 ft 2 in longer, has a grey tank 82 gal larger and has a black tank 50 gal larger; the two publish the same exterior height and fresh tank.
02 Full specifications
Dimensions
- Exterior length
- 43' 6"
- Exterior height
- 13' 4"
- Exterior width
- 96"
- Interior height
- Not published by Forest River
Weights
- Dry / unit base weight (UVW)
- 12,044 lb
- GVWR (max loaded)
- 15,500 lb
- Net cargo / payload (CCC)
- 3,456 lb
- Hitch / pin weight
- 2,380 lb
Capacities
- Fresh water
- 50 gal
- Grey water
- 132 gal
- Black water
- 100 gal
Running gear
- Hitch type
- Fifth wheel (pin box)
- Tire size
- Not published by Forest River
Sleeping & layout
- Sleeps
- Not published by Forest River
- Availability (as printed)
- Forest River files this floorplan “DSO” (Dealer Stock Only): sold from dealer inventory, not orderable from the factory
- Model year (as printed)
- page title "2026 Sierra Fifth Wheels 3550BH - DSO Floorplan - Forest River RV"
- Weight basis (as printed)
- UVW footnote: "*Estimated Average based on standard build optional equipment."
- Maker status (as printed)
- title suffix "- DSO"
- Awning
- 12' & 21'
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.
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 (15,500 lb) and the upper loaded pin estimate (3,875 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 figure, because loaded is never lighter than that.
03 The Sierra Fifth Wheels floorplan family
The Sierra Fifth Wheels floorplans below were added from Forest River’s 2026 Sierra Fifth Wheels floorplan page; every Sierra Fifth Wheels floorplan on this site, every model year, is listed on the Sierra Fifth Wheels hub.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| Sierra 3370RLS | 36' 4" | — | Profiled |
| Sierra 3550BH | 43' 6" | — | Profiled |
The Sierra Fifth Wheels floorplans below were added from Forest River’s 2026 Sierra Fifth Wheels floorplan page; every Sierra Fifth Wheels floorplan on this site, every model year, is listed on the Sierra Fifth Wheels hub.
04 Notes on this floorplan
What Forest River does not publish for the Sierra 3550BH
Forest River prints no tire size, interior height, sleeping capacity for this model, so none is given. Nothing is filled from a sibling model, a different model year or a dealer listing.
Read the label on the trailer
Federal rules put a load-carrying label inside every RV trailer: its unloaded weight with full propane, its cargo carrying capacity and its GVWR (49 CFR 571.110 and 571.120). Those figures come from the trailer itself and govern the towing decision.
05 How it compares
10,319 lb dry and 13,560 lb GVWR, against this model’s 12,044 lb and 15,500 lb.
06 Loading it for a trip
A full 50-gallon fresh tank is about 415 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 12% of the Sierra 3550BH’s 3,456 lb cargo capacity, leaving 3,041 lb. 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 Sierra Fifth Wheels Sierra 3370RLS, nearest on the published figures. It differs on 7 of the 8 fields both publish (this plan first): length 43 ft 6 in vs 36 ft 4 in; dry weight 12,044 lb vs 10,319 lb; GVWR 15,500 lb vs 13,560 lb; cargo capacity 3,456 lb vs 3,241 lb; hitch weight 2,380 lb vs 1,560 lb; grey tank 132 gal vs 50 gal; black tank 100 gal vs 50 gal. They match on fresh tank.
Either side of it by GVWR: Sierra Fifth Wheels Sierra 3370RLS is 1,940 lb lighter (13,560 lb GVWR).
| Nearest Sierra Fifth Wheels siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Sierra Fifth Wheels Sierra 3550BH | 43 ft 6 in | — | 12,044 | 15,500 | 3,456 | 2,380 | 50 |
| Sierra Fifth Wheels Sierra 3370RLS | 36 ft 4 in | — | 10,319 | 13,560 | 3,241 | 1,560 | 50 |
All 2 Sierra Fifth Wheels floorplans: Sierra Fifth Wheels line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| Sierra 3550BH | 15,500 | 12,044 | — | 43 ft 6 in |
| Bighorn Traveler 32RS | 15,500 | 10,803 | 4 | 36 ft 2 in |
| Brookstone 374RK | 15,500 | 13,020 | — | 42 ft 2 in |
| Chaparral 367BH | 15,500 | 12,328 | — | 42 ft 6 in |
| ElkRidge 37RED | 15,500 | 11,848 | 6 | 41 ft 7 in |
| Mesa Ridge 371MBH | 15,500 | 12,665 | — | 42 ft 5 in |
| Milestone 370FLMB | 15,500 | 12,520 | 8 | 44 ft 2 in |
Against the Sierra 3550BH: the Bighorn Traveler 32RS is 7 ft shorter; the Brookstone 374RK is 1 ft shorter; the Chaparral 367BH is 1 ft shorter.
08 Common questions about the Sierra 3550BH
How much does the Sierra 3550BH weigh?
12,044 lb dry; 15,500 lb GVWR, the most it may weigh loaded.
How much can the Sierra 3550BH carry?
3,456 lb, 22% of its GVWR (median across 442 fifth wheels here: 19%). A full fresh tank uses 415 lb of it.
What is the pin weight of the Sierra 3550BH?
2,380 lb as published, 20% of the dry weight (median across 686 fifth wheels here: 19%).
What size tow vehicle does the Sierra 3550BH need?
A tow rating of at least 15,500 lb, plus payload for the loaded pin weight, passengers and cargo.
What are the tank capacities on the Sierra 3550BH?
Fresh 50, grey 132, black 100 gallons. Off hookups, fresh water runs out first.
How long is the Sierra 3550BH?
43' 6" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
11 of the 18 fields this catalogue tracks are published for the Sierra 3550BH. Not published: interior height, sleeps, slide count, axle count, tire specification, refrigerator, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: forestriverinc.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 15 recall campaigns and 22 owner complaints (model years 2005 on) against the Sierra line (a recall and a complaint are not the same thing).
What to look at on a used one. Across the 22 complaints filed on this line the most-reported components are structure (32%), unknown or other (23%) and tires (14%).
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 Sierra line page.