2020 Forest RiverRockwood Extreme Sports Package 1640ESP

Forest River lists the 2020 Rockwood Extreme Sports Package 1640ESP at 1,722 lb dry, a net carrying capacity of 656 lb and a tongue weight of 178 lb. It prints no GVWR for it.

It is 12' 1" long. Forest River prints its tanks as 20 gal fresh.

Every number on this page was read on 7 Nov 2026 from Forest River’s Rockwood camping-trailer brochures (filed in Forest River’s year folders; the brochures print no year); model year 2020 comes from where the maker files it on its own site, not from the document’s text.

How the 1640ESP differs from the other 53 Rockwood Camping Trailers floorplans. Most distinctive first. Sibling pages may cover other model years than this one (2020). How these ranks are worked out.

• Tongue weight, 178 lb: second-lightest of 54, between the 16OTG (162 lb) and the 19OTG (183 lb).
• Length, 12 ft 1 in: fourth-shortest of 54, between the 1640FT and 16OTG (11 ft 10 in) and the 1940LTD (13 ft 9 in).
• Dry weight, 1,722 lb: fifth-lightest of 54, between the 1940LTD (1,685 lb) and the A101LE (1,748 lb).
• Tongue weight as a share of dry weight, 10.3%: shared with the 2318FT; of 54, five smaller and 47 larger, nearest the 1910FT (10.1%) and the 2317G (10.4%).
• Cargo capacity, 656 lb: thirteenth-smallest of 54, between the A214HW (653 lb) and the A223HW (667 lb).
• Fresh tank, 20 gal: shared with the 1910ESP, 1910FT and 21 others; of 52, sixteen smaller and twelve larger, nearest the 1640FT, 1920FT and eleven others (18 gal) and the 1950, 2280 and ten others (26 gal).

Next to the 1940LTD (2024 page), the nearest lighter floorplan by dry weight, the 1640ESP is 37 lb heavier by dry weight, has 19 lb more cargo capacity, has a tongue weight 48 lb lighter, is 1 ft 8 in shorter and has a fresh tank 10 gal larger.

Next to the A101LE (2026 page), the nearest heavier floorplan by dry weight, the 1640ESP is 26 lb lighter by dry weight, has 591 lb less cargo capacity, has a tongue weight 77 lb lighter, is 2 ft 4 in shorter and has a fresh tank 2 gal larger.

Forest River’s Rockwood camping-trailer brochures (filed in Forest River’s year folders; the brochures print no year) lists 54 Rockwood Camping Trailers floorplans; every one with a printed weight has a page here.

A full 20-gallon fresh tank is about 166 lb of water, 25% of the Rockwood Extreme Sports Package 1640ESP’s 656 lb cargo capacity, leaving 490 lb. Across 52 Rockwood Camping Trailers floorplans the water share runs 7% to 50%, and 12 give up more than this one. Nearest on that share: Rockwood Camping Trailers Rockwood Hard Side A223HW at 25% and Rockwood Camping Trailers Rockwood Hard Side A214HW at 25%.

The record at the top of this page is the 1640ESP from 2020. The maker’s own documents for earlier model years also list the 1640ESP, and that year is printed here: 2019. The figures change from year to year, so check the year on the trailer’s own label. A field a year’s brochure does not print reads “Not published” and is never filled from another year.