Questions to Ask When Buying a Used Travel Trailer
For buyers looking at a used travel trailer, from a private seller or a dealer. Covers water damage and roof sealant, soft floors and delamination, axles, brakes and tire dates, weights against your tow vehicle, propane and appliances, and the paperwork.
The questions
Open any question for the note
How long have you owned it, how many trips a year did you take, and why are you selling?
Why ask it
A trailer used two weekends a year and stored badly is often in worse condition than one used constantly by someone who maintained it, because sealant, tires, and seals deteriorate while sitting. Listen for whether they describe specific trips and specific repairs, which is the mark of an owner who paid attention.
Where has it been stored between trips, and was it covered?
Why ask it
Sun destroys roof membrane, sealant, decals, and tires, and a trailer parked under trees collects debris and moisture in every seam. Indoor or covered storage is worth real money on a used trailer, and an owner who paid for it usually maintained the rest as well.
Has anyone lived in it full time?
Why ask it
Full time occupancy puts years of wear on floors, upholstery, tanks, and water systems in a fraction of the time, and it usually means the plumbing has been through more freeze cycles. It also matters for resale, because some parks restrict older units and ask about previous use.
Has water ever got in, and where? What is the roof made of, and when was the sealant last renewed?
Why ask it
Water intrusion is what ends these trailers, and the seams, vents, skylights, and the front and rear caps need resealing on a schedule rather than when a stain appears. Treat a confident denial with no receipts as unverified, and look for staining at ceiling edges and a musty smell in the wardrobes.
Can I bring an inspector with a moisture meter, or check it myself, before I commit?
Why ask it
A meter reads through panelling where your eyes cannot, and it is the only way to find damage that has not yet stained or softened anything. A refusal, or a sale deadline too short to arrange it, tells you what the seller expects to be found.
Are there any soft spots in the floor, walls, or ceiling, or any delamination in the sidewalls?
Why ask it
Press the floor around the shower, toilet, entry step, and slide, and along the base of every wall. Sight down each sidewall from the corner in daylight: ripples or bubbles mean water has separated the layers, which is a structural repair rather than a cosmetic one and often costs more than the trailer is worth.
How old are the tires, what load range are they, and has one ever failed on the road?
Why ask it
The four digit code on the sidewall gives the week and year of manufacture, and trailer tires usually age out before they wear out. A previous blowout matters because a failing tire tears up the underbelly, wiring, and wheel well as it goes, and that damage is often patched rather than repaired.
When were the wheel bearings last repacked and the brakes inspected or replaced?
Why ask it
Electric trailer brakes wear out quietly because nobody feels them working, and bearings that have never been serviced are the most common cause of a wheel coming apart on the highway. Ask for a receipt, and if there is none, plan on having both done before your first trip.
What condition are the springs, shackles, and frame in, and are there any cracks or sagging?
Why ask it
Leaf springs flatten and shackle bushings wear out, which changes how the trailer tracks and wears tires unevenly. Look under it for cracks at welds, at the A frame near the coupler, and for a frame that dips behind the axles, since frame work is expensive and sometimes not economic at all.
What is the dry weight, the gross vehicle weight rating, and the tongue weight, and where is the rating plate?
Why ask it
The dry weight in the brochure excludes water, propane, batteries, and anything you pack, so the loaded figure is what matters. Tongue weight lands on your tow vehicle's payload, which is where most towing setups fall short, so compare the numbers against the sticker in your own door jamb before you buy.
Does the sale include the hitch equipment, weight distribution bars, and sway control?
Why ask it
A weight distribution hitch matched to the tongue weight is a substantial cost on its own, and the right one depends on the trailer. Getting the seller's setup included, along with any brake controller, saves both money and the guesswork of matching equipment later.
Do the slides and awning operate fully, and are the seals intact?
Why ask it
Run each slide in and out twice while you watch the seals and listen to the motor, and roll the awning out and back. A slide with damaged seals puts water into the floor at the point the trailer is least able to shed it, and an awning motor or fabric is a real bill.
Does the refrigerator cool on both propane and electricity, and how old are the furnace, water heater, and air conditioner?
Why ask it
An absorption fridge can work on one supply and not the other and needs hours to prove itself, so ask for it to be running before you arrive. Ask when the water heater anode rod was last changed too, since a neglected one means the tank has been corroding.
When were the propane cylinders last certified, and when was the system leak tested?
Why ask it
Cylinders require periodic recertification before anyone will refill them, so the date stamped on the collar is a checkable fact rather than an opinion. Ask about the regulator as well, because a failing regulator makes every gas appliance behave badly at once and is often misdiagnosed.
How old is the battery, and do the converter, twelve volt system, and running lights all work?
Why ask it
Plug the seven pin into a vehicle and check the running lights, brake lights, indicators, and electric brakes together, since a corroded plug or a broken wire in the umbilical is common and easy to overlook. Batteries are among the most frequently dead components on a used trailer and the easiest to describe as fine while on shore power.
What are the fresh, grey, and black tank capacities, do the valves seal, and how has the black tank been maintained?
Why ask it
Ask to see the fresh tank filled and the pump run, and to have the valves operated. A valve that does not seal or a tank left full through a winter turns into a repair rather than a clean, and staining or drips under the trailer around the valves tell you before the seller does.
How was it winterized each year, and has anything ever frozen?
Why ask it
Freeze damage shows up as split fittings, a cracked pump housing, or a leaking water heater the first time the system is pressurised, which may not be during your viewing. Ask what the process involved, and if they describe blowing the lines out with air rather than using antifreeze, ask who did it and how thoroughly.
Is there any evidence of rodents or insects, and is the underbelly cover intact?
Why ask it
Mice get in through the underbelly and around wiring pass throughs, chew insulation and wiring, and nest in the furnace ducting, and the smell is difficult to remove. Look inside every cabinet, in the furnace compartment, and under the mattress, and check the belly cover for tears and previous tape repairs.
Is the title clean and in your name, is there a lien, and how is a trailer registered here?
Why ask it
Registration and titling rules for trailers vary between jurisdictions, and a missing title or an unreleased lien can leave you with something you cannot legally tow. Check that the VIN on the frame matches the paperwork, and photograph both.
Can we hitch it up so I can tow it before I decide?
Why ask it
Towing reveals sway, brake balance, a dragging brake, bearing noise, and whether the trailer tracks straight, none of which is visible parked. Even a short run at highway speed on an open road, followed by a hand on each wheel hub to feel for heat, tells you a great deal.
What are you asking, and what would you take given what we have found?
Why ask it
Build the case from the specifics: tire dates, unserviced bearings, sealant age, appliance ages, and anything the moisture meter found. Look up completed sales of the same model year and floor plan first, since asking prices on listing sites tend to sit well above what trailers actually change hands for.
Inspecting a Used Travel Trailer
Practical guidance for the conversation itself
Look for Water Before Anything Else
Get on the roof, or get a ladder to it
Look at the sealant along every edge, vent, antenna, skylight, and air conditioner, and at the front and rear caps where the membrane turns down. Cracked, shrunken, or repeatedly patched sealant means water has had a route in. Soft decking underfoot means it took it. If you cannot get up there, that alone is a reason to hire an inspection.
Follow the water inside
Check ceiling corners, the tops of window frames, behind and under the bed, the inside of every cabinet and wardrobe, around the shower, and the base of every wall. Use a meter if you have one and your nose if you do not. New panelling or fresh paint in one small area is a question, not a reassurance.
Press everything
Walk the floor slowly in socks and press with your thumbs around the toilet, the shower pan, the entry step, and along the walls. Push on the exterior walls at the corners and below the windows. Sponginess anywhere is subfloor or wall rot, and repair means removing what is above it.
Test it wet
Fill the fresh tank, run the pump, and let it hold pressure while you look under sinks and in the water heater compartment. Run the shower and flush while the pump is on. A trailer that has sat for a year often develops a leak within an hour of being pressurised, which is exactly what you want to discover now.
Running Gear and Weights
Assume bearings and brakes need service
Unless there is a receipt, plan on repacking the bearings and inspecting the brakes before your first trip, and budget for it. Nothing about bearings or brakes announces itself from the driver's seat, which is why owners who service the roof and the appliances often have never touched either one.
Date the tires and check the spare
Read the four digit code on every tire including the spare, and look for cracking in the sidewalls and between the treads. Confirm the load range matches or exceeds what the trailer's rating plate calls for, and check that a jack and a lug wrench that fit are actually aboard.
Do the weight arithmetic before you fall for the trailer
Take the trailer's gross rating, not its dry weight, and its tongue weight, then compare against your tow vehicle's payload figure from the sticker in the driver's door jamb, remembering that passengers and cargo come out of the same allowance. Many buyers discover the mismatch after purchase, when the only remedy is a different vehicle.
Look underneath properly
Bring a light and something to lie on. Check the frame for cracks at welds, the A frame near the coupler, spring hangers, shackles, and the underbelly cover for tears or tape. Look for staining around the tank valves and for wiring hanging loose where a tire has come apart.
Where Buyers Get Caught
Reading a clean interior as a sound trailer
New flooring, fresh paint, and staged cushions cost very little next to a roof, a subfloor, or a delaminated wall. A plain trailer with receipts for sealant and bearing service is usually the better purchase.
Buying at the size limit of the tow vehicle
Tongue weight and passengers come out of the same payload allowance, and a trailer that tows adequately empty behaves differently loaded with water and gear. If the numbers are marginal on paper, they are over the limit in practice.
Skipping the moisture check to save an inspection fee
Hidden water damage is the one defect that reliably exceeds the value of the trailer. An hour with a meter, or a paid inspection, is the cheapest part of this purchase.
Forgetting what has to be bought before the first trip
A weight distribution hitch, brake controller, sewer and water hoses, surge protector, levelling blocks, chocks, and often a battery and tires. Add that list to the price before deciding the trailer is cheap.
Believing a demonstration instead of running the systems yourself
Insist on operating the fridge on both gas and electric, the furnace, the water heater, the air conditioner, the pump, the slides, and the awning. Systems fail in combination, and a walkthrough narrated by the seller is not a test.
Records and Paperwork to Ask For
- Title in the seller's name, with any lien release, and the VIN photographed from the frame
- The manufacturer's rating plate showing gross weight and axle ratings
- Receipts for roof sealant work and any water damage repair
- Bearing repack and brake service records
- Tire purchase receipts, and photographs of every date code including the spare
- Propane cylinder certification dates and the last leak test
- Appliance ages, and any repair history for fridge, furnace, water heater, and air conditioner
- Battery purchase date and details of any solar or inverter installation
- Winterizing records, and details of any freeze damage and its repair
- Hitch, weight distribution, and brake controller equipment included in the sale
- An inspection report with moisture readings, if one is carried out