2026 Alliance RV Paradigm375RD

The 375RD is the plan that gives the line its name: an ‘RD’ rear den at the back of the coach, configurable as an office, a second lounge or a guest space, ahead of a mid living area and a front king suite. It opens on five slide-outs — the most in the line alongside the 385FL — and sleeps five. The equipment is the full Paradigm package: a Lusso range with a 12,000-BTU burner and a 3.73-cubic-foot oven, a 19-cubic-foot 12-volt residential refrigerator, a king bed and a fireplace, on the Benchmark 101-inch wide-body drop-frame chassis with Curt 8,000-pound axles, self-adjusting brakes and six-point hydraulic leveling.

Alliance publishes an 18,000-pound GVWR against the 14,771-pound dry weight, leaving a 3,229-pound cargo capacity and a 2,875-pound dry pin, on the Curt 8,000-pound axles. Three roof air conditioners totalling 40,500 BTU, a 40,000-BTU furnace, a 12-gallon gas/electric water heater, an enclosed and heated underbelly and 98/106/53-gallon fresh/grey/black tanks are standard. At a starting MSRP around $132,000, with street pricing below placard, the 375RD is the flexible-space Paradigm — the rear-den layout for buyers who want a dedicated office or second living zone and tow with a one-ton truck.

Paradigm is Alliance RV's luxury full-profile fifth wheel — the company's flagship since 2019 and a cross-shop against Grand Design's Solitude, Keystone's Montana and Jayco's Pinnacle. The 2026 line runs to ten floorplans; the six profiled in full are linked below and the four catalogued plans are shown muted. The 375RD on this page is highlighted.

A full 98-gallon fresh tank is about 817 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 25% of the 375RD’s 3,229 lb cargo capacity, leaving 2,412 lb (482 lb per rated berth). Across 6 Paradigm floorplans the water share runs 23% to 27%, and 1 gives up more than this one. Nearest on that share: Paradigm 382RK at 24% and Paradigm 310RL 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 Paradigm 385FL, nearest on the published figures. It differs on 6 of the 9 fields both publish (this plan first): length 41 ft 9 in vs 41 ft 4 in; sleeps 5 vs 6; dry weight 14,771 lb vs 15,487 lb; GVWR 18,000 lb vs 19,000 lb; cargo capacity 3,229 lb vs 3,513 lb; dry hitch weight 2,875 lb vs 2,957 lb. They match on fresh tank, grey tank and black tank.

Either side of it by GVWR: Paradigm 310RL is 2,000 lb lighter (16,000 lb GVWR); Paradigm 382RK matches it at 18,000 lb GVWR.

All 6 Paradigm floorplans: Paradigm line hub.

Against the 375RD: the Cedar Creek 381MUD is 2 ft longer and sleeps 3 more; the Influence 3003RL is 7 ft shorter and sleeps 1 fewer; the Montana 3100RL is 6 ft shorter and sleeps 1 fewer.

17 of the 18 fields this catalogue tracks are published for the 375RD. Not published: interior height, tire size (a description is published, a size is not).

Sourcing rules: methodology.