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Keystone Laredo 355RL

Fifth wheelbuilt 2014–18Mixed build tierFindable on the used market
WHAT ONE COSTS
$36,000est. used (2018, 8 yr old)

Sticker was $61,493 in 2017. Out of production since 2018, so the used market is the only way to buy one. Estimate assumes a 2018 unit.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~11,992 lbestimated as towed, for 2 people

dry weight 10,642 lb + fresh water (66 gal, full) 550 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.

You want a tow rating around13,325 lb (10% margin)
GVWR (the sticker maximum)13,000 lb
Tongue weight, loaded~2,580 lb (22%)
Cargo capacity2,358 lb
WHICH TOW VEHICLES IT FITS: 20 OF 95

Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin, per model year, because the 355RL's published weights held steady. Fifth wheels also need a pickup bed and are held to the fifth-wheel rating where published.

VEHICLETOW RATINGVERDICT
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-2622,500 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-2318,510 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-1918,100 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-2636,000 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-1923,300 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '21-2314,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-1918,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel) '11-1616,600 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-2623,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-1932,500 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-2237,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-1621,600 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2638,000 lbfits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2640,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins HO) '19-2620,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins) '11-1817,980 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-1831,210 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-2636,610 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-2437,090 lbfits, loaded, with 10% margin
The 75it doesn't fit

These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →

THE SPECS
Length37.9 ft
Height (incl. A/C)12.6 ft
Width8.0 ft
GVWR13,000 lb
Dry weight10,642 lb
Dry tongue weight2,290 lb
Cargo capacity2,358 lb
Sleeps4
Slide-outs3
Axles2
Fresh water66 gal
Grey water78 gal
Black water44 gal
Air conditioning15,000 BTU
Awning16 ft

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP
  • 1× front bedroom king bed(Permanent)70×80
  • 1× tri-fold sleeper sofa(Convertible)—
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Keystone (Mixed tier): Keystone RV

YEAR BY YEAR: WHAT CHANGED
  • 2014Introduced
  • 2018Discontinued
FINDING ONE

Findable: a few listed nationwide most weeks. Why: Keystone is a volume manufacturer. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Mid-2010s rear living mid-profile Laredo with theater seating.

OTHER LAREDO FLOORPLANS
225MK · 8,000 lb · sleeps 4250BH · 8,400 lb · sleeps 8255SRL · 10,000 lb · sleeps 6275RL · 8,600 lb · sleeps 6280RB · 8,800 lb · sleeps 6284SBH · 10,350 lb · sleeps 8285SBH · 10,000 lb · sleeps 10287RL · 8,740 lb · sleeps 4290SRL · 10,160 lb · sleeps 6291SMK · 10,200 lb · sleeps 6292BH · 8,800 lb · sleeps 10293SBH · 10,000 lb · sleeps 9294SBR · 10,350 lb · sleeps 6296SBH · 10,600 lb · sleeps 8the whole line →
Find one for sale

Live listings for the 355RL on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole Laredo line ↗

Is the 355RL your #1, or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.

See where it ranks for you →

Data compiled from manufacturer spec sheets, retrieved 2026-07.