When should you replace RV tires?
You should replace RV tires based on their age and condition, not on how much tread is left — and for most RVs that means somewhere around five to seven years from the tire's manufacture date, with a close inspection starting at about year five. The reason is that RVs are low-mileage vehicles that spend most of their lives parked, so the tread rarely wears out; instead the rubber slowly degrades from oxidation, ultraviolet light, ozone, and heat cycles until a tire that still looks nearly new is no longer safe. A deep, handsome tread on a seven-year-old RV tire is exactly the trap that puts people on the shoulder with a blowout.
This is different from the car you drive daily, where high mileage wears the tread before age becomes the issue. With an RV, you have to think in years, not miles, and verify the specific guidance from your tire's manufacturer, since recommendations vary by brand and construction. The RV Safety and Education Foundation and the tire makers consistently stress this age-first mindset because tire failure is one of the most common ways an RV trip ends early — and the failures so often happen on tires whose tread looked perfectly fine. Pairing this with the weight-ratings guide covers the two halves of tire safety: load and age.
Read the DOT date code to learn the true age
You cannot judge a tire's age by when you bought it or when the RV was built, because tires can sit in warehouses and on dealer lots, and the RV's tires may even predate the coach. The only reliable clock is the DOT code molded into the sidewall. Every tire sold for road use carries a "DOT" followed by a string of characters, and the last four digits are the manufacture date: the first two are the week of the year and the last two are the year. A code ending in "2419," for example, means the tire was built in the 24th week of 2019. That four-digit stamp is how you know a tire's real age, and it is the first thing to check on any used rig.
Make reading it a habit. Walk around the rig, find the four-digit date code on each tire — sometimes it is only on the inboard sidewall, so you may need to look underneath or move the rig — and write down the ages. On a used RV this single check can reveal that "low-mileage" tires are actually near the end of their service life, which is both a safety issue and a negotiating point, as the used-RV inspection checklist notes. Knowing the date is what turns the vague "should I replace these?" into a clear decision.
Inflate to the load, and set it cold
Age is one half of tire safety; pressure is the other, and getting it right means inflating to the actual load, not just to the number on the sidewall. The pressure stamped on the sidewall is the maximum, while the correct pressure for your rig comes from the tire maker's load-and-inflation table matched to the real weight on each axle — which is why weighing your loaded rig, as the weight-ratings guide explains, feeds directly into setting tire pressure. Set that pressure cold, before you have driven and warmed the tires, because pressure rises as tires heat up and a "cold" target is the standard the tables assume.
Underinflation for the load is the single biggest cause of the heat that destroys tires. A tire carrying more weight than its pressure supports flexes too much, builds heat, and can come apart at speed, so running the right pressure for the actual load is as important as the tire's age. This is also where a tire-pressure monitoring system earns its place: a TPMS reads each tire's pressure and temperature in real time and warns you of a slow leak or an overheating tire before it fails, which matters most on trailer and dual tires whose trouble you cannot feel through the steering wheel. Goodyear and the other makers publish the load-inflation tables; use them rather than guessing.
Trailer tires and motorhome tires are not the same
Before you replace anything, know which kind of tire your rig actually uses, because trailers and motorhomes run different tires for different jobs. Most travel trailers and fifth wheels roll on ST, or "Special Trailer," tires, which are engineered specifically for being towed: they have stiffer sidewalls to resist sway and carry heavy vertical load, but they are not built to steer or drive. ST tires are also notably sensitive to both age and speed — many carry a lower speed rating, commonly around 65 miles per hour unless the tire is specifically marked for more, so sustained high-speed towing builds the kind of heat that ages and stresses them faster than owners expect. Respecting that speed rating is part of trailer-tire safety, not a suggestion.
Motorhomes, by contrast, run LT (Light Truck) tires or, on larger coaches, commercial truck tires, where the same age rules apply but the load and construction are different. Some trailer owners deliberately upgrade from ST to LT tires for more load and heat headroom, which can be a sound move — but only done carefully, matching at least the original load range, confirming wheel and rim compatibility, and respecting the fitment, rather than as a casual swap. The practical rule is simple: identify your tire type, replace like with like or better, never drop below the original load range, and honor the speed rating. Putting the wrong tire type on a rig, or pushing an ST tire past its rated speed, is its own failure path stacked on top of age and load — and the rig-specific used-trailer guide shows how running gear factors into the choice.
What decides replacement
Compare
What actually triggers an RV tire replacement — check all of these, not just tread
Use one comparison matrix to scan the practical differences. Small screens stack each row; wider screens keep the first column pinned.
| Spec | What to check | Replace when |
|---|---|---|
| Age (DOT date code) | Sidewall date stamp | Roughly 5-7 years old, regardless of tread — confirm with the maker |
| Sidewall condition | Cracking, checking, bulges | Any weather-cracking or a bulge — replace now |
| Tread depth | Tread wear | Worn low — but on RVs, age usually comes first |
| Load range & inflation | Load rating vs axle weight | Underrated for the load, or chronically run underinflated |
RV tire safety at a glance
The facts that keep aged tires from ending a trip.
Replacement window
~5-7 years
Inspect closely from year five; replace by the maker's age limit regardless of tread.
True age
DOT date code
Last four sidewall digits = week and year of manufacture, not your purchase date.
Pressure
To the load, cold
Use the load-inflation table for the actual axle weight, set before driving.
Early warning
TPMS
Real-time pressure and temperature alerts catch trouble before a blowout.
Storage and sun are the hidden agers
Because RVs sit so much, how you store them strongly affects how fast the tires age, and a few habits add years of safe life. Sunlight and ozone are hard on rubber, cracking sidewalls from the outside in, so covering the tires when the rig is parked for long stretches and keeping them out of prolonged direct sun meaningfully slows the weather-checking that ends a tire's life. Keeping the tires clean and avoiding petroleum-based dressings that can accelerate degradation helps too, as does parking on a barrier rather than directly on hot asphalt or bare ground.
Sitting still has its own costs. A tire that holds the rig's weight in one spot for months can develop a flat spot and loses pressure slowly, so moving the rig occasionally and maintaining proper inflation during storage keeps the tires healthier. The point is that an RV tire's enemy is mostly time and exposure rather than mileage, so the storage half of the year matters as much as the driving half. The off-grid readiness checklist folds a tire and load check into trip prep, which is the natural moment to catch a tire that has quietly aged out over a winter of sitting.
A worked example: great tread, old tires
Consider a six-year-old Class C motorhome with only 18,000 miles on it. The tires look fantastic — deep tread, no obvious wear — and an owner judging by tread alone would happily keep driving. But read the DOT date codes and they come back as seven years old, because the tires were built before the coach was assembled and have barely turned since. Despite the tread, those tires are past the inspection threshold and into the replacement window, and the very thing that kept the tread deep — low mileage — is exactly why age, not wear, governs the decision.
Now flip it: a tow vehicle that racks up highway miles may wear its tread to the bars while the tires are still young, and there tread is the governing factor. The two cases capture the whole lesson. For the rarely-driven RV, set a calendar reminder around year five, read the date codes, inspect the sidewalls for cracking, and plan to replace by the maker's age limit even if the tread protests that it is fine. For the high-mileage vehicle, watch the tread. When the two signals disagree on an RV, age almost always wins.
The short version
RV tires age out before they wear out, so replace them on years, not tread — commonly a close inspection from about year five and replacement by roughly five to seven years, confirmed against your tire maker's guidance. Read the DOT date code on the sidewall to learn a tire's true age, inflate to the actual axle load using the maker's table and set it cold, and add a TPMS to catch trouble early. Cover the tires and maintain pressure in storage to slow aging, and treat any sidewall cracking or a bulge as replace-now. The tire that looks fine at seven years is the one that strands you.
How to check and decide on your RV tires
- Read every date code. Find the four-digit DOT date on each sidewall and work out each tire's age in years.
- Inspect the sidewalls. Look for weather-cracking, checking, bulges, and uneven wear — any of which means replace now regardless of age.
- Compare age to the window. Plan a close inspection from about year five and replacement by your maker's age limit, even with good tread.
- Set pressure to the load. Weigh the loaded rig, use the tire's load-and-inflation table for each axle, and set the pressure cold.
- Add monitoring and protect them. Fit a TPMS, cover the tires in long storage, keep proper pressure while parked, and move the rig occasionally.
Good tread does not mean a safe tire
An RV tire can have deep tread and still be unsafe from age, because the rubber degrades whether or not you drive. Aged tires fail as blowouts that can damage the rig and cause loss of control, so replace on age and condition, not tread alone, and never exceed your tire maker's stated age limit. Inflate to the load, set cold, and follow the maker's load-inflation table and date-code guidance rather than estimating.
Official tire references
Confirm age limits, inflation, and date codes from the source.
Frequently asked
Questions RVers usually ask next.
How often should you replace RV tires?
Most guidance points to a close inspection starting around five years and replacement by roughly five to seven years from the manufacture date, regardless of tread, because RV tires age out before they wear out. Confirm the exact age limit with your tire maker, since it varies by brand and construction.
How do you read an RV tire's date code?
Find the DOT code on the sidewall and read the last four digits: the first two are the week of the year and the last two are the year of manufacture. A code ending in 2419 means the tire was made in the 24th week of 2019 — that is the tire's true age, not your purchase date.
Do RV tires really age out even with good tread?
Yes. RVs are low-mileage and spend most of their time parked, so the rubber degrades from time, sun, ozone, and heat long before the tread wears down. A tire with deep tread can still be unsafe at six or seven years, which is why age and sidewall condition matter more than tread on an RV.
What tire pressure should I run in my RV?
Inflate to the pressure the actual axle load requires, using the tire maker's load-and-inflation table and the weight on each axle from a scale, and set it cold before driving. The number on the sidewall is the maximum, not necessarily your target; underinflation for the load is a leading cause of blowouts.
Do I need a TPMS on my RV?
It is strongly recommended. A tire-pressure monitoring system reports each tire's pressure and temperature in real time and warns of a slow leak or overheating before a blowout — especially valuable on trailer and dual tires whose trouble you cannot feel through the steering wheel.
Freshness note
Last checked June 6, 2026
This topic can change when products, plans, prices, campsite rules, or fit guidance move. These notes show what was reviewed most recently.
This review included
- Framed the age-based replacement window (commonly a close inspection from about year five and replacement by roughly five to seven years regardless of tread) as guidance to confirm with the tire maker, anchored to RV Safety & Education Foundation and Goodyear tire-care material.
- Confirmed how to read the DOT date code (last four digits = week and year of manufacture) and the inflate-to-the-load, set-cold guidance, linking the weight-ratings guide for the axle-weight side.
- Kept the blowout-cause point general and pointed readers to the tire maker's load-and-inflation table and date-code guidance.
Recent change log
June 6, 2026
Published an RV tire guide: why tires age out before they wear out, reading the DOT date code, the years-not-miles window, load range and inflating to the load, TPMS, UV/storage, and when to replace now.
Broader editorial corrections are tracked on the Corrections and Updates page.
