01 What makes it unique
The 388SP is the newest and most expensive Paradigm, introduced for 2026 around an ‘SP’ side patio: a wall panel off the living area folds down into an outdoor deck with railing, opening the coach to the outside in a way no other Paradigm does. It sleeps four on three slide-outs, with a king suite and the full Paradigm equipment 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 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 a 19,000-pound GVWR against the 15,528-pound dry weight — the heaviest dry weight in the line — leaving a 3,472-pound cargo capacity and a 3,112-pound dry pin, the highest pin in the Paradigm range. 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 $153,000 it is the priciest Paradigm, with street pricing below placard. For buyers who want an integrated outdoor patio deck on a luxury full-profile coach and tow with a one-ton truck, the 388SP is the 2026 flagship.
02 Full specifications
Dimensions
- Exterior length
- 40' 11"
- Exterior width
- 101" (wide-body chassis)
- Exterior height
- 13' 5"
- Chassis
- Benchmark 101" wide-body drop-frame
Weights
- Dry / unit base weight (UVW)
- 15,528 lbs
- GVWR (max loaded)
- 19,000 lbs
- Net cargo / payload (CCC)
- 3,472 lbs
- Dry pin (hitch) weight
- 3,112 lbs
Capacities
- Fresh water
- 98 gal
- Grey water
- 106 gal
- Black water
- 53 gal
- Refrigerator
- 19 cu ft
Construction
- Chassis
- Benchmark 101" wide-body drop-frame
- Suspension
- TCS Touring Coil Suspension · MorRyde 8K independent disc available
- Walls
- Azdel-backed high-gloss fiberglass · insulated laminated rear wall
- Roof
- Walkable PVC membrane · roof ladder · access ports
- Underbelly
- Enclosed & heated tanks · heated low-point drains
Running gear
- Axles
- 2 (Curt 8,000 lb)
- Hitch
- Fifth-wheel (in-bed) · Helux coil-spring pin box · 2" accessory receiver
- Brakes
- Self-adjusting · MorRyde 8K independent disc option
- Tires
- H-rated · Counteract balancing beads · 16" spare
Galley & bath
- Cooktop
- Lusso range · 12,000-BTU burner · 3.73 cu ft oven
- Refrigerator
- 19 cu ft
- A/C
- 3 units · 40,500 BTU
- Water heater
- 12-gal gas / electric
Sleeping & layout
- Sleeps
- 4
- Slides
- 3
- Entries
- 1
- Awnings
- 2
- Primary bed
- King
03 The Paradigm floorplan family
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 388SP on this page is highlighted.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| 295MK | 33 ft | 4 | Mid kitchen, rear living, shortest in line |
| 310RL | 34 ft | 4 | Rear living great room, walk-around island |
| 312RK | 34 ft | 4 | Rear kitchen |
| 340RL | 37 ft | 4 | Rear living |
| 370FB | 40 ft | 4 | Front bath |
| 388SP | 40 ft | 4 | Side patio, new for 2026, flagship |
| 385FL | 41 ft | 6 | Front living, loft, sleeps six |
| 382RK | 41 ft | 6 | Rear kitchen, sleeps six |
| 375RD | 41 ft | 5 | Rear den, five slides (namesake plan) |
| 395DS | 42 ft | 7 | Sleeps 7 (largest catalogued) |
Paradigm has been Alliance RV's luxury full-profile fifth wheel and its flagship since the company's founding in 2019. The 2026 line runs to ten floorplans; the six broadest-appeal layouts are profiled here in full and the remaining four are catalogued from published specifications below. Every Paradigm rides the Benchmark 101-inch wide-body drop-frame chassis on Curt 8,000-pound axles with self-adjusting brakes, H-rated tires and a Helux coil-spring pin box, with six-point hydraulic leveling, an enclosed and heated underbelly, a walkable PVC roof, a 19-cubic-foot 12-volt residential refrigerator, three roof air conditioners totalling 40,500 BTU, a 40,000-BTU furnace, a 12-gallon gas/electric water heater and a Lusso range as standard; a MorRyde 8K independent suspension with disc brakes is available. Hitch weight, GVWR, dry weight and CCC are published per plan and each plan's dry weight plus CCC equals its GVWR exactly. Dry weight is a factory estimate; real loaded pin weights run higher — always weigh the loaded coach and confirm against your truck's payload and rear-axle ratings.
04 What owners & reviewers report
Side patio deck (new for 2026)
An ‘SP’ wall panel folds down into a railed outdoor deck off the living area — unique in the Paradigm line and new for 2026.
Priciest, heaviest Paradigm
The highest MSRP and heaviest dry weight in the line, with the highest 3,112-pound pin.
Full luxury equipment
Carries the complete Paradigm standard package — Lusso range, 19-cu-ft 12V fridge, king suite, six-point leveling.
Wants a one-ton truck
At a 19,000-pound GVWR and a 3,112-pound pin, confirm a properly rated one-ton truck’s payload and rear-axle rating.
05 How it compares
Grand Design’s luxury Solitude — a full-profile luxury-5W cross-shop at the top of the class.
Brinkley’s luxury fifth wheel — a modern independent-maker cross-shop with outdoor-focused layouts.
The front-living 385FL — lighter, five slides and a front great room instead of a side patio.