RV Tire Replacement Signs You Should Not Ignore

That great campground in the national park, that boondocking spot in the desert, that overlook on the highway? None of them are so much fun if you get a tire problem and end up stranded on the side of the road. Tire replacement is not exactly glamorous for your RV. But it’s important to every good part of your trip.

A passenger car tends to be driven regularly. An RV often sits for months, is loaded up and then spends long stretches on the interstate in the summer heat. Tires take a beating under those conditions, even if their tread looks good for another season.

Tires are the only connection between your RV and the road. So treat them as seriously as you’d treat fuel stops, campground reservations and route clearance. That way you’ll be more likely to make it to some of the amazing places on your list, without an avoidable delay.

RV Tire Replacement Starts With More Than Tread

Tread depth matters in RV tires but it isn’t everything. A tire can have plenty of tread but still be unsafe. Its rubber could be old, its structure could be fatigued or there could be cracks in its sidewall.

Before a long trip, take a look at all your tires in the daylight. Check the spare too. Look for:

A bulge, exposed cords or deep cut in the tire, in which case take it out of service immediately.
Don’t risk driving on a suspect tire to the next campground. In the right conditions heat and load could cause it to fail in no time.

Look too for uneven tread.

Tread worn in the center often means the tire has been overinflated.
Wear on the shoulders may mean it was underinflated.
Cupping, scalloping or pulling of the tire could signal trouble with your brakes, suspension, wheel bearings or alignment.

If you replace a tire but don’t address the underlying problem, you could well get the same kind of wear in the new one.

Cracks or checking in the sidewall, tread grooves, or around the valve stem
Bulges, bubbles, cuts, exposed cords, or a section that looks uneven
Uneven tread wear, including wear that’s concentrated on one shoulder or in the center
Repeated air loss, a damaged valve stem, or a tire that needs frequent topping off
Rubbing marks, especially after a suspension issue or a too-tight turn

Age Can Matter More Than Mileage

Many RVers don’t realize that even low mileage can age their tires. Over time, under the influence of temperature, sunlight, ozone and sitting, rubber ages. A 3,000 mile-per-year motorhome will often age out its tires long before they wear out their tread. Look at the date code on the sidewall of your tire.

The last four digits of the code will tell you the week and year of manufacture. For example, 1824 would indicate this tire was manufactured in the 18th week of 2024. Sometimes the code appears on the inner sidewall, not the outer one.

Different brands of tire, different climates, different use of your RV and different storage conditions will all affect how long a tire lasts. Many tire and RV manufacturers recommend at least an annual professional inspection once tires reach about five years old. Often they’ll suggest replacing them in six to 10 years.

You should base your decision on advice from your tire manufacturer and the specs of your RV. Long storage, heavy loads, sun and heat can all cut into that window.

If you purchased a used RV, look at the date code on its tires rather than assuming a new-looking tire is new. A tire can be several years old even if it’s just been put on your RV.

Choose Tires for Your Actual RV Load

Don’t pick RV tires based only on size. They need to fit the wheel, the axle, the requirements of the vehicle and your driving. Look at the certification label on your RV. From there, note the tire size, load range, required inflation pressure and pressure rating of the wheel.

First consider the weight of the RV. Best practice is to weigh each wheel position on a certified scale. More often than not, a loaded coach will weigh more than it did when it rolled off the factory line. Think about all the items on board: food, water, propane, batteries, tools, bikes, passengers and souvenirs. And don’t forget the weight of the RV itself.

Often, the weight will be quite different from side to side. That’s especially true if your coach has storage cabinets, appliances in the galley or slide-outs on one side only.

Check the load and inflation pressure chart for your particular tire size and model. The pressure should be sufficient for the heaviest wheel position on each axle. And it needs to be within the limits of the wheel and RV manufacturers. Usually, the pressure stamped into the tire’s sidewall is its maximum cold pressure. That doesn’t necessarily mean it’s right for your rig.

Often, travel trailers use what are called Special Trailer (ST) tires. Light Truck (LT) tires may be used in some heavier towables and motorhomes, depending on their original build.

Let a Tire Shop Handle the Details That Travel Days Miss

Don’t necessarily go with a different size, type or load range just because your local tire shop carries it. That could change the load-carrying capacity of your tires, handling, clearance and compatibility with your wheel. An RV tire dealer can help you check whether a particular tire would work for you.

In particular, if you have dual wheels on the rear of your RV, they should be the same size and type. And their diameter should be as close as possible. Otherwise one wheel could end up carrying more weight than the other. When replacing duals, it’s best to do so in pairs. And look between them for rocks or debris.

More than just mounting and balancing, consider having a tire shop check your wheels, lug nuts, valve stems and condition of the old tires. And if you’re running high pressure in your tires, you’ll probably need a metal valve stem and a cap rated for that pressure. If you have a tire pressure monitoring system, make sure the sensors are properly reinstalled or checked.

After they are installed, use the lug nut torque specification from your RV manufacturer. If your manual says to check torque after 50-100 miles, do so. Never use a passenger car torque spec on an RV. Lug hardware and wheels vary on an RV.

Often when one tire goes out, you might think to just replace that tire. That’s fine if the other tires are new and the same. But with an older set of tires, you could end up with five or seven tires at the end of their life with only one new one. Consider your trip, budget, age of your tires and distance you’ll travel.

Make Tire Checks Part of Trip Planning

Best of all, you might pick up a problem with a tire in your driveway. Not when you’re pulling into a full campground late at night. Not on a steep hill. On departure morning, add a quick check of your tires to your routine. Check the sidewalls. Check pressure (when the tires are cold). Check that the caps on the valves are tight. And check underneath your RV for possible slow leaks or damage to the suspension.

At the pump, take a close look at your tires with your eyes and hand. Is one low? Do you see debris in the tread? An odd smell? Don’t touch a hot tire or wheel. You could use an infrared thermometer to check whether a tire or wheel is much hotter than the others. But even if it is, that’s more reason to have the tire checked by someone rather than a reason to skip it.

Another way to extend tire life is to keep them clean and avoid using petroleum-based dressings on them. Use ventilated covers. And, when possible, park on dry, firm ground.

If you’ll be storing your RV for a long time, check the tire and RV manufacturer’s advice about storage. Tires can be aging even if they don’t appear to be.

Roadtrippers can help you plan sensible fuel stops, overnight parking, and campgrounds along the way, leaving room in the itinerary for a tire inspection instead of forcing a long, exhausting drive day. That little bit of margin is often what keeps a minor maintenance concern from becoming a trip-changing problem.

Fresh, correctly rated tires will not make every mile perfect, but they give you confidence to take the scenic byway, pull into the small-town diner, and keep saying yes to the detours that make RV travel memorable.