2026 East to West Longitude315FB

The Longitude 315FB leaves East to West's factory at 8,033 lbs dry, with a published GVWR of 9,400 lbs and 1,367 lbs of cargo capacity between the two. Cargo capacity is 15% of the loaded rating, and East to West's own definition is worth reading before you plan against it: cargo capacity is what remains for fresh water, gear, food, batteries and every dealer-installed accessory. Fresh water alone is 8.3 lb per gallon, so filling this trailer's 39-gallon fresh tank spends 324 lbs of that 1,367 lbs before anything else is loaded.

Dry tongue weight is 840 lbs, or 10% of the dry weight. Ten to fifteen percent is the conventional band for a bumper-pull trailer, and this plan sits inside it as published. Tongue weight is not fixed: it moves with how the trailer is loaded, and weight added ahead of the axles raises it. A weight-distribution hitch is the normal fitment at this tongue load, and the tow vehicle's tongue-weight limit is a separate number from its trailer-weight limit.

Tank capacities are 39 gallons fresh, 90 grey and 30 black, 120 gallons of waste capacity against 39 gallons of supply. The ratio is what governs how long the trailer can sit off hookups: waste capacity exceeds fresh, so the fresh tank is the binding constraint and refilling extends the stay. East to West publishes these three figures per floorplan, and they are the factory's numbers rather than a segment average.

Against the rest of the Longitude roster this is the 7th of 7 floorplans by dry weight, in a line that runs from 5,293 lbs to 8,033 lbs. It is the heaviest plan in the line, so the tow vehicle should be settled before the floorplan is. Comparing floorplans inside one line is more reliable than comparing across brands, because every figure here comes from the same factory channel on the same day.

A useful way to read the pair of weights is to stop planning against the dry figure. Nobody tows a trailer at 8,033 lbs: that is the weight before water, batteries, propane, bedding, food, tools and anything the dealer bolted on. Load half the published cargo capacity, which is modest for a family trip, and this plan is already near 8,717 lbs on the road. Compare that number against the tow vehicle, not the dry weight, and leave margin on top of it - the published GVWR of 9,400 lbs is a limit rather than a target.

Every number above was captured twice from East to West and checked against itself before it was published. The line roster block and the individual floorplan page are two separate factory renderings of the same trailer, and this plan's 4 shared figures agree exactly on both. Dry weight plus cargo capacity also equals the published GVWR exactly, which is the arithmetic check this site runs on every profiled floorplan. Where a figure is missing from this page it is because East to West does not publish it in this channel, not because it was hard to find - and the row says so rather than being quietly dropped.

East to West 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. 315FB is a Longitude designation and this site does not decode it into a layout claim.

Longitude is the only East to West line on this site that publishes a GVWR, and it is worth saying plainly what that buys you: on all seven plans where East to West publishes one, dry weight plus cargo capacity equals the published GVWR exactly. That arithmetic tying out is the difference between a loaded rating you can plan a tow around and a number somebody added up. GVWR runs 7,650 to 11,335 lb across the seven, against dry weights of 5,293 to 8,033 lb and cargo capacity of 1,367 to 3,572 lb. Tongue weight runs 650 to 935 lb, all bumper pull. Three more floorplans are published on the roster with no weights at all yet, and they are listed as announced rather than given specifications they do not have.

This floorplan carries its water comfortably. A full 39-gallon fresh tank is roughly 24% of the 1,367-pound cargo capacity, leaving the 315FB with a usable gear budget even when you tow full.

The published dry tongue weight of 840 pounds is 10% of the 8,033-pound dry weight, which sits inside the 10–15% band usually quoted for stable towing. It is still a dry figure: loading the front pass-through and the fresh tank both push it up.

Nothing above changes the ceiling. Loaded to its 9,400-pound GVWR the 315FB is towing 1,367 pounds more than its 8,033-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 39 gallons of fresh against 90 grey and 30 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Ranked by GVWR, the 315FB sits 3 of 7 in the Longitude line: 9,400 pounds against a line that runs from 7,650 to 11,335 pounds. That position is the useful thing to know, because the plans immediately either side of it are the real alternatives.

Either side of it in the same line: Longitude 185RB is 1,660 pounds lighter at 7,740 lb GVWR; and Longitude 230FK is 230 pounds heavier at 9,630 lb GVWR.

Against the 315FB: the Delta 292RL is 50 lb heavier and 2 ft shorter; the Coachmen Catalina 273DBHCK is 52 lb lighter and 2 ft shorter; the Coachmen Freedom Express Ultra Lite 292BHDS is 100 lb heavier and 3 ft shorter. 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 travel trailers 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 Longitude floorplans profiled here run 5,293 to 8,033 pounds dry and 24 to 38 feet of exterior length across 7 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 Longitude line hub.

This catalog tracks 18 specification fields per floorplan. Named sources publish 11 of them for the 315FB. The rest are not shown, because the alternative is reading a figure across from a sibling floorplan or from what the segment usually does — and a number nobody published is worth less than an admitted gap.

Not published for this floorplan: interior height, sleeps, slide count, axle count, tire specification, refrigerator, air conditioning. If you find one of these in a manufacturer document for this plan, it belongs on this page.

The completeness figure at the foot of this page (85%) measures the same thing on the full field set: it is a measurement of how much this floorplan’s manufacturer publishes, not of how much research went into the page.

How every figure here was sourced and checked is set out on the methodology page.