2026 Forest River Campsite Reserve28SW

The Campsite Reserve 28SW has 4,047 lbs of cargo capacity between 7,578 lbs dry and its 11,625 lbs GVWR, 35% of that rating; filling its 52-gallon fresh tank at 8.3 lb a gallon uses 432 lbs of it (how to read trailer weights).

Tongue weight is 1,425 lbs, 19% 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: 76 gallons of grey and black capacity against 52 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 16th 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 7,578 lbs dry figure: half the published cargo capacity brings this plan to about 9,602 lbs, and the published GVWR of 11,625 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. 28SW is a Campsite Reserve designation and this site does not decode it into a layout claim.

How the 28SW differs from the other 21 Campsite Reserve floorplans. Most distinctive first. How these ranks are worked out.

• Tongue weight, 1,425 lb: heaviest of 22; next is the 39JD (1,400 lb).
• Tongue weight as a share of dry weight, 18.8%: largest of 22; next is the 23TS (14.9%).
• Cargo capacity, 4,047 lb: second-largest of 22, between the 39IB (2,961 lb) and the 39GB (4,336 lb).
• GVWR, 11,625 lb: fifth-highest of 22, between the 20JW (11,205 lb) and the 39GB (13,255 lb).
• Cargo capacity as a share of GVWR, 34.8%: fifth-largest of 21, between the 39GB (32.7%) and the 19KR (35.4%).
• Length, 37 ft 11 in: sixth-longest of 22, between the 29TJ (36 ft 11 in) and the 32GT (39 ft 10 in).
• Dry weight, 7,578 lb: seventh-heaviest of 22, between the 29TJ (7,353 lb) and the 32GT (7,593 lb).
• Exterior height, 10 ft 10 in: shared with the 16BC, 17LS and 23TS; of 22, twelve lower and six taller, nearest the 18LM (10 ft 9 in) and the 19KR (10 ft 11 in).
• Black tank, 38 gal: shared with the 20LJ, 26CJ and four others; of 22, ten smaller and five larger, nearest the 16BC, 17LS and eight others (28 gal) and the 20JW, 39GB and 39LA (40 gal).

Next to the 29TJ, the nearest lighter floorplan by dry weight, the 28SW is 225 lb heavier by dry weight, has a GVWR 1,630 lb higher, has 1,405 lb more cargo capacity, has a tongue weight 465 lb heavier, is 1 ft longer and stands 3 in taller; the two publish the same fresh tank, grey tank and black tank.

Next to the 32GT, the nearest heavier floorplan by dry weight, the 28SW is 15 lb lighter by dry weight, has a GVWR 1,630 lb higher, has 1,645 lb more cargo capacity, has a tongue weight 305 lb heavier, is 1 ft 11 in shorter and stands 2 in taller; the two publish the same fresh tank, grey tank and black 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 52-gallon fresh tank is about 432 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 11% of the 28SW’s 4,047 lb cargo capacity, leaving 3,615 lb. Across 22 Campsite Reserve floorplans the water share runs 8% to 34%, and 20 give up more than this one. Nearest on that share: Campsite Reserve 39GB at 8% and Campsite Reserve 39IB at 11%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).