Before a long RV trip, check tire pressure and tread, wheel lug torque, brakes, and all fluids. Inspect the battery, propane system, and appliances, test lights and safety detectors, verify hitch and weight distribution, and pack an emergency kit. Confirm registration, insurance, and a recent service inspection.
Key takeaways
- Tires cause a large share of RV roadside failures, so check pressure cold, inspect tread and sidewalls, and confirm tires are not past their age limit before every long trip.
- Test propane, batteries, and all appliances at home where problems are easy to fix, not at a campsite after dark.
- Verify weight distribution, hitch connection, and safety chains, and confirm you are within your RV’s rated cargo and tongue weight.
- A professional pre-trip inspection through McClain’s RV service catches brake, bearing, and seal issues that are hard to spot in a driveway.
The pre-trip RV checklist, in order of importance
Before a long RV trip, the checks that matter most are the ones that keep you safe and moving: tires, brakes, wheel torque, fluids, battery, propane, and safety detectors. Handle those first, then work through appliances, hitching, loading, and documents. Running the list a few days out (not the morning you leave) gives you time to fix anything you find.
Below is the full walk-through, grouped so you can move through your rig from the wheels up.
Check your tires first
Tires are the single most common cause of RV roadside breakdowns, so start here. Check inflation with a gauge when the tires are cold, and set them to the pressure on the RV’s tire placard, not the number molded on the sidewall. Under-inflated RV tires build heat and blow out at highway speed.
Inspect each tire for uneven tread wear, cracks in the sidewall, bulges, and embedded debris. Check the DOT date code: RV tires often age out before they wear out, and most should be replaced around six to seven years regardless of tread depth. Do not forget the spare, and confirm you have a working jack and lug wrench sized for your rig.
Torque the lug nuts and inspect the brakes
Re-torque your wheel lug nuts to the manufacturer’s spec, especially if the wheels have been off for service recently. Loose lugs are a known cause of wheel separation on trailers and motorhomes.
Test the brakes before you leave the neighborhood. On a travel trailer or fifth wheel, confirm the electric brake controller engages and that the breakaway cable and switch work. On a motorhome, check pedal feel and listen for grinding. Wheel bearings should be repacked on the schedule in your owner’s manual, and a hot hub after a short drive is a warning sign worth investigating.
Top off and inspect fluids
Check every fluid before a long haul. On a motorhome that means engine oil, coolant, transmission fluid, power steering, brake fluid, and windshield washer. On any RV, confirm the fresh water tank is filled if you need it, the gray and black tanks are empty, and you have added holding tank treatment.
Look under the coach for drips or stains after it has sat overnight. A fresh puddle tells you where to look before it becomes a roadside problem.
Test the batteries and electrical system
Verify both your chassis battery (on a motorhome) and house batteries are charged and holding voltage. Clean any corrosion off the terminals and confirm the connections are tight. If your batteries are more than a few years old and slow to charge, replace them before the trip rather than during it.
Run through the 12-volt system: interior lights, water pump, slide-outs, and the leveling system. Then plug into shore power or start the generator and confirm the converter, outlets, and air conditioning all work.
Inspect the propane system and appliances
Test the propane system at home where a problem is easy to solve. Confirm the tanks are filled and within their certification date, then light the stove, furnace, water heater, and refrigerator on gas to make sure each one fires and holds. A refrigerator that will not cool or a furnace that will not light is far easier to deal with in the driveway than at a campsite after dark.
Check propane lines and fittings for leaks with soapy water, never a flame. If you smell gas or a fitting bubbles, stop and have it repaired before you travel.
Test every safety device
Confirm the smoke detector, carbon monoxide detector, and propane (LP) detector all power on and pass their test button. Replace batteries as needed. Check that your fire extinguisher is charged and within reach, and that the pressure gauge reads in the green.
Walk the exterior lights with a helper: running lights, brake lights, turn signals, and reverse lights on both the tow vehicle and trailer. A trailer with dead brake lights is both dangerous and a ticket waiting to happen.
Check the hitch, weight, and loading
Verify your hitch connection is fully seated and locked, safety chains are crossed and attached, and the breakaway cable is connected. On a fifth wheel, confirm the kingpin is locked in the jaws and the tailgate clears the coach.
Load heavy items low and forward, and distribute weight side to side. Confirm you are within your RV’s cargo carrying capacity and tongue or pin weight, both listed on the yellow sticker inside the coach. Overloading strains tires, brakes, and suspension, and it is the hidden cause behind many trailer sway and blowout incidents.
Seal the roof and windows
Inspect the roof sealant around vents, the air conditioner, skylights, and seams. Cracked or peeling sealant lets water in, and water damage is the most expensive problem an RV can develop. Check window and slide-out seals too. If you spot gaps, reseal before rain finds them on the road.
Pack the essentials and confirm your paperwork
Build an emergency kit: reflective triangles, a basic tool set, jumper cables, tire sealant or a plug kit, spare fuses, work gloves, a flashlight, duct tape, and a first aid kit. Carry your leveling blocks, wheel chocks, sewer hose, drinking-water hose, and surge protector.
Confirm your registration and insurance are current and in the coach, and check whether your route passes through states or parks with size or length restrictions. Program dump stations and fuel stops that can handle your rig’s height and length.
When to book a professional inspection
Get a professional pre-trip inspection if your RV has been in storage for several months, if you are about to tow across mountains or long stretches of desert, or if you are simply not sure the brakes, bearings, and seals are trip-ready. A technician can check items that are hard to judge from a driveway, like brake shoe wear, bearing condition, and slide-out mechanics.
McClain’s RV runs full service and repair shops at its Texas and Oklahoma stores, and its Keep On Campin’ maintenance program is built to keep coaches road-ready between trips. If you are near Corinth, Fort Worth, Rockwall, Sanger, Kerrville, or Oklahoma City, you can schedule a pre-trip service so the tires, brakes, propane, and seals are checked before you leave. Owners heading out from the Austin and New Braunfels area can use the Kerrville location while the San Marcos store is still coming soon.
A quick timeline for stress-free departure
| When | What to do |
|---|---|
| 1 to 2 weeks out | Book any service, replace aging tires or batteries, reseal the roof |
| 3 to 4 days out | Test appliances, propane, generator, and all safety detectors |
| Day before | Fill fresh water and propane, empty holding tanks, load and balance cargo |
| Departure morning | Check cold tire pressure, lug torque, lights, hitch, and fluid levels |
Work the list top to bottom and most trip-ending failures never get the chance to start. The best repair is the one you make in your own driveway.
Frequently asked questions
How far in advance should I inspect my RV before a trip?
Start your inspection one to two weeks before departure. That window gives you time to order tires, replace batteries, reseal the roof, or book service if you find a problem. Save quick checks like cold tire pressure, lug torque, lights, and fluid levels for the morning you leave, since those can change while the RV sits and are fast to verify.
What is the most common cause of RV breakdowns on long trips?
Tire failures are the most common RV roadside breakdown. Under-inflation, overloading, and age are the usual culprits. RV tires often age out around six to seven years before their tread wears out, so check the DOT date code, not just the tread depth. Always set pressure cold to the RV’s placard spec and confirm you are within your rig’s rated cargo weight.
Should I get my RV professionally serviced before every trip?
You do not need a shop visit before every short trip, but a professional inspection is smart before a long haul, after months in storage, or before towing through mountains or desert. A technician can check brakes, wheel bearings, seals, and slide mechanics that are hard to judge yourself. McClain’s RV offers pre-trip service and its Keep On Campin’ maintenance program at its Texas and Oklahoma locations.
How do I check my RV propane system for leaks safely?
Brush soapy water on propane fittings and lines with the gas turned on, and watch for bubbles that signal a leak. Never use a flame or lighter to test for leaks. Confirm tanks are filled and within their certification date, then light the stove, furnace, water heater, and refrigerator to be sure each fires. If you smell gas or see bubbles, shut off the propane and have it repaired.
What emergency gear should I carry in my RV?
Carry reflective warning triangles, a basic tool set, jumper cables, a tire plug kit or sealant, spare fuses, work gloves, a flashlight, duct tape, and a first aid kit. Add your leveling blocks, wheel chocks, sewer hose, drinking-water hose, and a surge protector. Keep a charged fire extinguisher within reach and confirm your registration and insurance are in the coach.
How do I know if my RV is overloaded?
Check the yellow cargo capacity sticker inside your RV, which lists your cargo carrying capacity and tongue or pin weight. The most reliable way to confirm you are under those numbers is to weigh the loaded rig at a public scale. Overloading strains tires, brakes, and suspension and is a hidden cause of trailer sway and blowouts, so load heavy items low and forward and balance side to side.
