The Grand Design Solitude is a residential-style, full-profile fifth wheel built for full-timers and snowbirds, and on the used market it tends to hold value better than a lot of competitors. That reputation is exactly why you should slow down: a clean-looking Solitude can still hide water intrusion, slide-out wear, and tires that aged out before the tread did. This guide walks you through what to inspect, what to ask the seller, and what to pay, all framed for a nervous buyer who does not want to inherit someone else's expensive problem.
The Solitude is a fifth wheel, not a travel trailer, which matters for how you tow it and how you inspect it. It is heavy, tall, and slide-heavy, and that shapes everything below. When you find a candidate, you can get your RV verdict by pasting the listing, and then use this guide to verify the unit in person.
What the Solitude Is, and Who It Fits
The Solitude line sits at the upper end of Grand Design's towable range. These are long, multi-slide fifth wheels (commonly in the 32 to 41 foot range) with residential refrigerators, larger holding tanks, and insulation packages aimed at extended-season and full-time use. Floor plans run from rear-living to mid-bunk and front-bedroom layouts, and many include a second bathroom or an island kitchen.
That capability comes with weight and tow demands. Depending on year and floor plan, a Solitude can carry a dry weight roughly in the 12,000 to 15,500 pound range, with a gross vehicle weight rating (GVWR) often pushing 16,000 pounds or higher. Pin weights frequently land in the 2,500 to 3,500 pound range. Before you fall for a floor plan, confirm your truck can actually pull it. Run the numbers in the RV towability calculator and look at the yellow weight sticker on the unit, not the brochure. If you need a dually and you own a half-ton, that is a real cost, not a footnote.
This is not a casual weekender's rig. It fits a buyer who wants space, residential comfort, and time on the road, and who is willing to maintain a complex unit.
The Five Systems That Decide a Used Solitude's Fate
On a used Solitude, most of the money and heartbreak lives in five systems. Inspect these before you fall in love with the countertops.
- Water intrusion. The number one killer of any large fifth wheel. Check around the front cap, slide toppers, roof penetrations, window corners, and the underbelly. Soft spots in the floor near slides and at the bedroom slide are common report areas to research.
- Slide-outs. A Solitude can have three to five slides. Each one is a moving seal, a motor or hydraulic ram, and a wear point. Cycle every slide fully in and out.
- Roof and sealants. EPDM or TPO roofs need resealing on a schedule. Cracked or peeling lap sealant at the seams is a maintenance flag, not always a dealbreaker, but it tells you how the owner cared for the rig.
- Tires and suspension. Heavy fifth wheels are hard on tires and equalizers. Age matters more than tread.
- Frame, pin box, and landing gear. Look for cracks, rust streaks, and bent components, especially if the unit was towed loaded and often.
For deeper reading on the failure modes, see water damage signs, slide-out problems, and RV tire age.
The Walk-Around Inspection Checklist
Bring a flashlight, a moisture meter if you can, a ladder, and old clothes. Do not skip the roof.
| Area | What to check | What it likely means / rough cost to budget |
|---|---|---|
| Front cap and nose | Spider cracks in fiberglass, soft spots, staining behind it | Cosmetic cracks are common; soft spots suggest intrusion. Repair can run hundreds to several thousand dollars (verify on the unit). |
| Roof membrane | Tears, ponding stains, condition of lap sealant at all seams | Reseal supplies are cheap; a failing membrane replacement can run $3,000 to $7,000+ (verify on the unit). |
| Each slide-out | Cycle fully in/out, check seals, floor at the slide edge, topper fabric | Sticking or grinding points to motor/ram or seal wear; budget hundreds to a few thousand per slide (verify). |
| Slide toppers | Sun rot, tears, sagging | Replacement awnings/toppers commonly $150 to $400 each installed (verify). |
| Underbelly | Sagging coroplast, rodent entry, water staining, insulation condition | Rodent or water damage hidden here is a major red flag. |
| Tires | DOT date code (week/year) on sidewall, sidewall cracking, even wear | Aged tires need replacing regardless of tread; a set of LT/ST tires can run $1,200 to $2,500+ (verify). |
| Suspension / equalizer | Worn bushings, bent equalizer, leaf spring condition | Wet-bolt/equalizer upgrades are a known maintenance item; budget a few hundred to $1,500 (verify). |
| Frame and pin box | Cracks, fresh welds, rust streaks at welds | Frame issues are walk-away territory unless documented and repaired. |
| Appliances | Residential fridge cooling, furnace, AC units (often two), water heater | Confirm each runs on both 120V and propane where applicable. |
| Holding tanks | Tank sensors, valve operation, signs of past freeze damage | Cracked tanks from freezing are expensive and common in cold-storage units. |
| Interior | Delamination on slide faces, soft subfloor, ceiling stains, musty smell | A musty smell is a stop-and-investigate signal, not a quirk. |
For a printable version, use the used RV inspection checklist, and skim the RV red flags list before you sign anything. Slide faces and front caps are also worth checking for delamination, where the fiberglass skin separates from the backing and you see bubbles or waves.
Year-by-Year and Model Considerations to Research
Treat any "common problems" you read online as buyer concerns to verify, not proven defect rates. The honest move is to research reported issues for the specific year you are looking at and then confirm on the actual unit.
- Slide and seal wear is reported across multiple model years simply because these units have so many slides. Cycle them yourself rather than trusting the listing photos.
- Suspension and equalizer upgrades are a frequent owner topic on heavier Solitude floor plans. Ask whether wet bolts or a heavier equalizer were installed.
- Water heater, fridge, and slide motor components are wear items on any rig this age; ask for service records.
- Recalls can apply to specific build years and components. Do not take the seller's word. Check NHTSA recalls and complaints by make, model, and year (search the VIN where possible) so you know what was open and whether it was fixed.
Also confirm there is no money owed against the unit. A clean inspection means nothing if the title is encumbered, so run a title and lien check before any money changes hands.
Questions to Ask the Seller
Ask these directly and watch how they answer. Vague answers on maintenance are themselves data.
- How was it stored, indoors, covered, or outside in the sun and weather?
- When was the roof last resealed, and do you have receipts?
- Has it ever had water intrusion, a leak, or floor repair?
- Were the tanks winterized every cold season? Any history of freeze damage?
- How old are the tires (read me the DOT date codes)?
- Have any slides ever been serviced, rebuilt, or had seals replaced?
- Was it full-timed in, and roughly how many miles did you tow it?
- Were any suspension or equalizer upgrades done?
- Do you have the original weight sticker and the owner's manual?
- Is the title in hand and free of any liens?
Walk-Away Conditions
Some findings are worth negotiating. Others mean you close the door politely and leave. Walk away (or demand a major price drop plus a professional inspection) if you find:
- Soft, spongy floor near slides, the front cap, or the bedroom, especially with a musty smell.
- Active water stains on the ceiling or active leaks during a hose test.
- Frame cracks or undocumented fresh welds on the frame or pin box.
- A slide that will not fully extend or retract, or that grinds.
- Tires older than roughly six to seven years regardless of tread, treated as a price item, not a hidden surprise.
- A title problem, an unresolved lien, or a VIN that does not match the paperwork.
- A seller who refuses a third-party inspection or a hose/leak test.
What to Pay, and How to Frame the Offer
Used Solitude pricing is wide because year, floor plan, slide count, and condition all move the number. As honest, verify-on-the-unit ranges: older high-mileage units (roughly 7 to 10 years old) often trade lower, mid-age units in good shape sit in the broad middle, and near-new low-use units command a premium because the model holds value. Expect real-world asking prices to span roughly the high-$20,000s to the $80,000s depending on all of the above. Always confirm against current comparable listings in your region rather than a single number.
Build your offer from the unit's flaws, not the seller's asking price. Add up the tire replacement, slide service, resealing, and any suspension work you found, then subtract a fair share from a fair market comp. The used RV offer calculator helps you turn your inspection notes into a defensible number, and the RV ownership cost calculator keeps you honest about insurance, storage, and maintenance after the sale. For more model and type background, browse the guides library.
Frequently Asked Questions
Is a used Grand Design Solitude a good buy?
For the right buyer, yes. The Solitude is well regarded for residential comfort and tends to hold value, which is a plus when you resell and a reason to inspect carefully when you buy. A good buy is a well-maintained, dry, documented unit at a price that reflects the tires, slides, and roof work you will need to do. Skip any unit you cannot inspect thoroughly.
What truck do I need to tow a Solitude?
Plan on a serious tow vehicle. With dry weights often in the 12,000 to 15,500 pound range and pin weights commonly 2,500 to 3,500 pounds, many Solitude floor plans push past what a half-ton or even a single-rear-wheel three-quarter-ton can safely handle. A one-ton dually is a common pairing. Verify against the unit's actual GVWR and pin weight using the RV towability calculator, not the brochure.
What are the most common problems to watch for on a used Solitude?
Frame these as areas to inspect, not proven defect rates: water intrusion at the front cap and slides, slide-out seal and motor wear, roof sealant maintenance, aged tires, and suspension/equalizer wear on heavier floor plans. Research reported issues for the specific year and confirm everything on the actual unit, and check NHTSA for recalls by make, model, and year.
How old is too old for a used Solitude?
Age alone is not the disqualifier; maintenance is. A ten-year-old unit that was stored indoors, resealed on schedule, and never leaked can be a better buy than a five-year-old unit left in the sun. That said, older units come with aging tires, original slide seals, and possibly tank or appliance wear, so price accordingly.
How do I check the title before buying?
Never wire money or hand over cash until you confirm the title is clean and in the seller's name, with no lien attached. Match the VIN on the unit to the paperwork, and run a title and lien check. An encumbered title can leave you paying for a trailer the lender can still repossess.
Found a Solitude listing? Paste it and get your RV verdict before you drive out to see it.