2027 Forest River Vibe3400SB

The Vibe 3400SB leaves Forest River's factory at 8,708 lbs dry with 2,767 lbs of cargo capacity. Forest River publishes no GVWR for this line, so the loaded rating is not quoted on this page and is not computed from the other two figures. What the cargo number covers is defined by the factory: fresh water, gear, food, batteries and every dealer-installed accessory come out of it. Fresh water is 8.3 lb per gallon, so filling the 38-gallon fresh tank spends 315 lbs of the 2,767 lbs before anything else goes in.

Forest River’s 2027 floorplan drawing for the 3400SB shows, at the front, a custom king bed in a slide, with shelves, a vanity, a fireplace and a TV prep, beside a bath with a shower and washer prep. Mid-coach: a 30-by-74 bunk above a Versa queen in a slide, a bunk wardrobe and shelves, a TV prep, an entertainment center with a fireplace, and a booth dinette and tri-fold sofa in a second slide. At the rear: a kitchen across the rear with a fridge, a pantry, a cooktop, a sink and a mini fridge. It draws three slide-outs. Outside it labels an outside fridge. Layouts change with options; check the unit itself.

Tongue weight is 1,275 lbs, 15% of the dry weight as published; it rises as the trailer is loaded and counts against the tow vehicle’s tongue-weight and payload limits (tongue weight by size).

Off hookups: 126 gallons of grey and black capacity against 38 gallons of fresh water, so fresh water runs out first (tank sizes by length).

Against the rest of the Vibe roster this is the 7th of 9 floorplans by dry weight, in a line that runs from 6,758 lbs to 8,933 lbs. It sits in the heavier third of the line.

Plan the tow on loaded weight, not the 8,708 lbs dry figure: half the published cargo capacity brings this plan to about 10,092 lbs. Forest River publishes no loaded rating for this line, so the ceiling is the one on the trailer’s own weight label (how to read trailer weights).

Forest River’s line listing and this floorplan’s own factory page agree on all 4 shared figures. No GVWR is published for this line, so dry plus cargo has no rating to check against. A missing row means Forest River does not publish that figure (how figures are verified).

Forest River's own description of this floorplan reads: “This is another floorplan unlike any other, the 3400SB has a brand-new mid-bunkroom, rear-kitchen, and spacious master-bedroom slide. This camper truly has something for everyone with limitless opportunities to the space at hand. The 3400SB is a great representation of how we stretch the limits here at Vibe.” That is the factory's marketing copy rather than a specification, and nothing in it is treated as a verified field on this page - layout descriptions, sleeping arrangements and feature claims in factory copy are not carried into the spec table unless the factory also publishes them as specifications.

How the 3400SB differs from the other eight Vibe floorplans. Most distinctive first. How these ranks are worked out.

• Tongue weight, 1,275 lb: heaviest of nine; next is the 3400BH (1,195 lb).
• Tongue weight as a share of dry weight, 14.6%: largest of nine; next is the 2600BH (14.3%).
• Cargo capacity, 2,767 lb: second-largest of nine, between the 2600BH (2,762 lb) and the 2600RB (2,997 lb).
• Dry weight, 8,708 lb: third-heaviest of nine, between the 2800RL (7,793 lb) and the 3400XL (8,818 lb).
• Length, 39 ft 10 in: longest of nine, level with the 3400BH and 3400XL; next is the 2900KB (35 ft 9 in).
• Grey tank, 96 gal: shared with the 2600RK, 2800RL and 3400XL; of nine, four smaller and one larger, nearest the 2600RB (70 gal) and the 3400BH (106 gal).

Next to the 2800RL, the nearest lighter floorplan by dry weight, the 3400SB is 915 lb heavier by dry weight, has 705 lb more cargo capacity, has a tongue weight 220 lb heavier and is 4 ft 10 in longer; the two publish the same exterior height, fresh tank, grey tank and black tank.

Next to the 3400XL, the nearest heavier floorplan by dry weight, the 3400SB is 110 lb lighter by dry weight, has 265 lb more cargo capacity and has a tongue weight 155 lb heavier; the two publish the same length, exterior height, fresh tank, grey tank and black tank.

Vibe is Forest River's mid-size family travel trailer, and it comes with a documentation problem worth knowing before you shop it: Forest River publishes dry weight, cargo capacity and tongue weight for every Vibe floorplan, and publishes no GVWR for any of them. That is not an omission on this page. The factory spec block runs hitch weight, then UVW, then CCC, then dimensions and tanks, and stops. Every GVWR figure you will see quoted for a Vibe comes from somewhere other than Forest River's own spec channel.

A full 38-gallon fresh tank is about 315 lb of water, 11% of the 3400SB’s 2,767 lb cargo capacity, leaving 2,452 lb. Across 9 Vibe floorplans the water share runs 11% to 15%, and 7 give up more than this one. Nearest on that share: Vibe 2600RB at 11% and Vibe 2600BH at 11%.