2026 Forest River Campsite Reserve39GB

The Campsite Reserve 39GB has 4,336 lbs of cargo capacity between 8,919 lbs dry and its 13,255 lbs GVWR, 33% of that rating; filling its 40-gallon fresh tank at 8.3 lb a gallon uses 332 lbs of it (how to read trailer weights).

Tongue weight is 1,255 lbs, 14% 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: 80 gallons of grey and black capacity against 40 gallons of fresh water, so fresh water runs out first (tank sizes by length).

Against the rest of the Campsite Reserve roster this is the 19th of 22 floorplans by dry weight, in a line that runs from 3,764 lbs to 12,380 lbs. It sits in the heavier third of the line.

Plan the tow on loaded weight, not the 8,919 lbs dry figure: half the published cargo capacity brings this plan to about 11,087 lbs, and the published GVWR of 13,255 lbs is the limit (how to read trailer weights).

Forest River’s line listing and this floorplan’s own factory page agree on all 4 shared figures. Dry weight plus cargo capacity equals the published GVWR exactly. A missing row means Forest River does not publish that figure (how figures are verified).

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. 39GB is a Campsite Reserve designation and this site does not decode it into a layout claim.

How the 39GB differs from the other 21 Campsite Reserve floorplans. Most distinctive first. How these ranks are worked out.

• Cargo capacity, 4,336 lb: largest of 22; next is the 28SW (4,047 lb).
• Dry weight, 8,919 lb: fourth-heaviest of 22, between the 20JW (8,774 lb) and the 39IB (11,039 lb).
• GVWR, 13,255 lb: fourth-highest of 22, between the 28SW (11,625 lb) and the 39JD (13,400 lb).
• Tongue weight, 1,255 lb: fourth-heaviest of 22, between the 32GT (1,120 lb) and the 39LA (1,305 lb).
• Length, 40 ft 7 in: fourth-longest of 22, between the 32GT (39 ft 10 in) and the 39JD (43 ft 4 in).
• Exterior height, 12 ft 9 in: fourth-tallest of 22, between the 39IB (12 ft 7 in) and the 20JW, 39JD and 39LA (13 ft 6 in).
• Cargo capacity as a share of GVWR, 32.7%: sixth-largest of 21, between the 25CY (32.1%) and the 28SW (34.8%).
• Tongue weight as a share of dry weight, 14.1%: seventh-largest of 22, between the 27MR and 29TJ (13.1%) and the 26RM (14.2%).
• Grey tank, 40 gal: shared with the 20JW; of 22, seventeen smaller and three larger, nearest the 19KR, 20AJ and eleven others (38 gal) and the 39LA (70 gal).
• Black tank, 40 gal: shared with the 20JW and 39LA; of 22, seventeen smaller and two larger, nearest the 20LJ, 26CJ and five others (38 gal) and the 39IB (70 gal).
• Fresh tank, 40 gal: shared with the 20JW, 39IB and two others; of 22, three smaller and fourteen larger, nearest the 16BC, 17LS and 18LM (26 gal) and the 19KR, 20AJ and twelve others (52 gal).

Next to the 20JW, the nearest lighter floorplan by dry weight, the 39GB is 145 lb heavier by dry weight, has a GVWR 2,050 lb higher, has 1,905 lb more cargo capacity, has a tongue weight 250 lb heavier, is 4 ft 11 in longer and stands 9 in lower; the two publish the same fresh tank, grey tank and black tank.

Next to the 39IB, the nearest heavier floorplan by dry weight, the 39GB is 2,120 lb lighter by dry weight, has a GVWR 745 lb lower, has 1,375 lb more cargo capacity, has a tongue weight 155 lb heavier, is 3 ft 11 in shorter, stands 2 in taller, has a grey tank 40 gal smaller and has a black tank 30 gal smaller; the two publish the same fresh tank.

Campsite Reserve is the widest single Forest River travel-trailer roster this site carries: dry weight runs 3,764 lb at the 16BC to 12,380 lb at the top of the loft group, and cargo capacity runs 1,020 to 4,336 lb. Tongue weight runs 431 to 1,425 lb and GVWR 5,531 to 14,000 lb. The loft plans are where the weight is -- the 39-series sits at the top of every column -- and the three toy haulers sit in the middle rather than the top, which is unusual for a line that carries both. Twenty-one of the twenty-two profileable plans tie out exactly against dry weight plus cargo capacity. The exception is 23TS, whose own arithmetic gives 7,795 lb against a published GVWR of 7,805; it is published on its own page with that disagreement stated rather than profiled with the rest.

A full 40-gallon fresh tank is about 332 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 8% of the 39GB’s 4,336 lb cargo capacity, leaving 4,004 lb. Across 22 Campsite Reserve floorplans the water share runs 8% to 34%, and this plan’s is the lowest. Nearest on that share: Campsite Reserve 28SW at 11%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).