2027 Forest River Columbus340RG

The Columbus 340RG leaves Forest River's factory at 10,464 lbs dry, with a published GVWR of 12,870 lbs and 2,406 lbs of cargo capacity between the two. Cargo capacity is 19% of the loaded rating, and Forest River's own definition is worth reading before you plan against it: cargo capacity is what remains for fresh water, gear, food, batteries and every dealer-installed accessory. Fresh water alone is 8.3 lb per gallon, so filling this trailer's 75-gallon fresh tank spends 622 lbs of that 2,406 lbs before anything else is loaded.

Pin weight is 1,870 lbs, which is 18% of the dry weight. That figure lands on the truck's rear axle and comes straight off its payload rating - not its towing rating, which is the number most often quoted and the wrong one for this decision. Pin weight rises as the trailer is loaded, and a fifth wheel loaded toward its cargo capacity will put substantially more than 1,870 lbs over the bed. Read the payload figure on your own door sticker rather than a brochure maximum for the model.

Tank capacities are 75 gallons fresh, 78 grey and 39 black, 117 gallons of waste capacity against 75 gallons of supply. The ratio is what governs how long the trailer can sit off hookups: waste capacity exceeds fresh, so the fresh tank is the binding constraint and refilling extends the stay. Forest River publishes these three figures per floorplan, and they are the factory's numbers rather than a segment average.

Against the rest of the Columbus roster this is the 1st of 8 floorplans by dry weight, in a line that runs from 10,464 lbs to 14,664 lbs. It is the lightest plan in the line, which makes it the one to look at first if the tow vehicle is the constraint. Comparing floorplans inside one line is more reliable than comparing across brands, because every figure here comes from the same factory channel on the same day.

A useful way to read the pair of weights is to stop planning against the dry figure. Nobody tows a trailer at 10,464 lbs: that is the weight before water, batteries, propane, bedding, food, tools and anything the dealer bolted on. Load half the published cargo capacity, which is modest for a family trip, and this plan is already near 11,667 lbs on the road. Compare that number against the tow vehicle, not the dry weight, and leave margin on top of it - the published GVWR of 12,870 lbs is a limit rather than a target.

Every number above was captured twice from Forest River and checked against itself before it was published. The line listing and the individual floorplan page are two separate factory renderings of the same trailer, and this plan's 4 shared figures agree exactly on both. Dry weight plus cargo capacity also equals the published GVWR exactly, which is the arithmetic check this site runs on every profiled floorplan. Where a figure is missing from this page it is because Forest River does not publish it in this channel, not because it was hard to find - and the row says so rather than being quietly dropped.

Forest River publishes no floorplan description for this plan in the channel this page is built from - only the numeric specification block. Rather than describe a layout from the floorplan code, which would be a guess dressed as a fact, this page carries what the factory publishes and says where it stops. 340RG is a Columbus designation and this site does not decode it into a layout claim.

How the 340RG differs from the other seven Columbus floorplans. Most distinctive first. Each rank counts only the siblings that publish that field, and a figure most of them share is left out. Not every one of these pages covers the same model years as this one (2027); each figure is the one its own page prints, so a rank compares pages, not one model year.

• Dry weight, 10,464 lb: lightest of eight; next is the 360FK (11,489 lb).
• GVWR, 12,870 lb: lowest of eight; next is the 360FK (14,175 lb).
• Pin weight, 1,870 lb: lightest of eight; next is the 360FK (2,175 lb).
• Length, 34 ft 8 in: shortest of eight; next is the 360FK (36 ft 3 in).
• Cargo capacity as a share of GVWR, 18.7%: second-largest of eight, between the 383RLH (18.2%) and the 360FK (18.9%).
• Pin weight as a share of dry weight, 17.9%: third-smallest of eight, between the 389FLH (17.6%) and the 388FKH (18.6%).
• Cargo capacity, 2,406 lb: fourth-largest of eight, between the 388FKH (2,271 lb) and the 360FK (2,686 lb).
• Grey tank, 78 gal: smallest of eight, level with the 360FK, 379MBL and 383RLH; next are the 388FKH and 389FLH (110 gal).
• Black tank, 39 gal: smallest of eight, level with the 360FK, 379MBL and 389FLH; next are the 383RLH and 384RKH (71 gal).

Next to the 360FK, the nearest heavier floorplan by dry weight, the 340RG is 1,025 lb lighter by dry weight, has a GVWR 1,305 lb lower, has 280 lb less cargo capacity, has a pin weight 305 lb lighter and is 1 ft 7 in shorter; the two publish the same exterior height, fresh tank, grey tank and black tank.

Eight 2027 Columbus fifth wheels with a full factory record. The two new plans, 340RG and 360FK, bring the line down to 10,464 lb dry and 34 feet 8 inches; the carried-over plans run to 14,529 lb dry and 43 feet. Cargo capacity runs 1,956 to 2,786 lb and the hitch weight Forest River lists runs 1,870 to 2,630 lb. Every plan publishes a GVWR, from 12,870 to 16,630 lb, and dry weight plus cargo capacity equals it exactly.

A full 75-gallon fresh tank is about 622 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 26% of the 340RG’s 2,406 lb cargo capacity, leaving 1,784 lb. Across 8 Columbus floorplans the water share runs 21% to 31%, and 4 give up more than this one. Nearest on that share: Columbus 360FK at 23% and Columbus 388FKH at 27%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).

Closest sibling: the Columbus 360FK, nearest on the published figures. It differs on 5 of the 8 fields both publish (this plan first): length 34 ft 8 in vs 36 ft 3 in; dry weight 10,464 lb vs 11,489 lb; GVWR 12,870 lb vs 14,175 lb; cargo capacity 2,406 lb vs 2,686 lb; hitch weight 1,870 lb vs 2,175 lb. They match on fresh tank, grey tank and black tank.

Either side of it by GVWR: Columbus 360FK is 1,305 lb heavier (14,175 lb GVWR).

All 8 Columbus floorplans: Columbus line hub.

Against the 340RG: the Eagle 325MKTS is 30 lb heavier; the Roamer 32RLTS is 330 lb heavier and 2 ft longer; the Wildcat 32LIVE is 630 lb heavier and 2 ft longer.

11 of the 18 fields this catalogue tracks are published for the 340RG. Not published: interior height, sleeps, slide count, axle count, tire specification, refrigerator, air conditioning.

Sourcing rules: methodology.