2024 Jayco Eagle355MBQS

The Eagle 355MBQS sits in the full-size tier of Jayco's Eagle fifth wheels, above the half-ton Eagle HT and below the luxury North Point and Pinnacle coaches. This page covers one model year of it — the 2024 355MBQS, exactly as Jayco published it — because the numbers that decide whether your truck can pull this trailer are not the same from one year to the next. Jayco publishes it at 8' 1" wide closed and 14' 0" with the slide-outs run out for the 2024 model year, which is the measurement that matters for a site pitch as well as for the road.

For the 2024 model year Jayco published a 15,200-pound GVWR on a 12,830-pound dry weight, 2,370 pounds of published cargo capacity, a 2,420-pound dry pin weight. A pin weight in that range lands well outside half-ton territory: plan on a three-quarter-ton or larger truck, and check the loaded pin against the truck's payload and rear-axle ratings rather than against the tow rating alone. The 2024 coach left the factory on ST235/85R16'E' tyres; the load range in that code is part of the axle rating and a replacement set has to match it.

Against the 2022 build of the same floorplan, 9 published fields moved. The full comparison is in section 02, and it is drawn from two separate verified factory records rather than from one record and an assumption about the other.

A 2024 coach is close to current as of 2026, but section 05 still applies: check it against its build date rather than its model year. Jayco commonly builds a model year well before the calendar year turns, and the tyre date codes have to be read against the build month, not the badge.

Jayco changed 9 of the published fields between the 2022 and 2024 355MBQS. Every figure in both columns is that model year's own factory record — nothing here is carried across from the other year.

4 fields not compared above. Exterior height; Exterior width, slides out; Furnace output; Tire size. The 2022 figures on this page come from Jayco's own 2022 brochure, which carries no column for them at all; the 2024 figures come from its 2024 model page, which does. That is a difference between two kinds of factory document rather than a change Jayco made to the trailer, so this page does not report it as one and does not count it in the figure above.

This floorplan carries its water comfortably. A full 81-gallon fresh tank is roughly 29% of the 2,370-pound cargo capacity, leaving the 355MBQS with a usable gear budget even when you tow full.

The published dry pin weight of 2,420 pounds is 19% of this floorplan’s 12,830-pound dry weight. Fifth-wheel pin weight rides in the bed of the truck, so it comes off payload rather than off tow rating — and it rises with the trailer as you load it, not in proportion to what you put over the axles.

Nothing above changes the ceiling. Loaded to its 15,200-pound GVWR the 355MBQS is towing 2,370 pounds more than its 12,830-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 81 gallons of fresh against 87 grey and 50 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Against the 355MBQS: the Montana High Country 295RL is 3 lb heavier and 8 ft shorter and sleeps 4 fewer; the Sandpiper 3990FL is 175 lb heavier and 1 ft longer and sleeps 2 fewer; the Sierra 3990FL is 175 lb heavier and 1 ft longer. Those are differences in the published numbers only — what they cost, how they are built and how they live are separate questions each of those pages answers on its own terms.

Those are the nearest fifth wheels from other lines by weight — one per line, picked by proximity on that figure and nothing else. They are listed so the same tow vehicle can be checked against real alternatives, not because they are equivalent inside; layout, build and price diverge sharply across that group.

For scale, the Eagle floorplans profiled here run 6,560 to 13,030 pounds dry and 28 to 43 feet of exterior length across 81 plans. Where a floorplan falls in that spread usually says more about which vehicle can tow it, and which site it fits, than the layout name does.

Every profiled floorplan in this line, with the full weight table, is on the Eagle line hub.

Named sources publish 13 of the 18 specification fields this catalogue tracks for the 355MBQS (95% complete on the full field set).

Not published for this floorplan: slide count, axle count, awning, refrigerator, air conditioning. Those rows are left blank rather than copied from a sibling floorplan.

Sourcing rules: methodology.