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How Often Should You Replace Your Tires?

By Jessica Palma

May 26, 2026

7 min read

Tire & Wheel Care

This guide explains how to know when it’s time to replace your tires based on how old your tires are, how many miles, and your own senses! We explain the sights, sounds and sensations that may indicate it’s time to replace those worn-out, older tires.

QUICK ANSWER: WHEN TO REPLACE TIRES

Replace your tires if any of these apply, according to the National Highway Traffic Safety Administration (NHTSA):

Tread ≤ 2/32 in (1.6 mm): U.S. legal minimum — replace immediately
Tread ≤ 4/32 in (3.2 mm): Wet traction is reduced — plan to replace soon
Winter tires ≤ 5–6/32 in (4.0–4.8 mm): Snow traction is reduced — plan to replace soon
Age: Have a technician inspect tires at every service visit after 6 years; replace by 10 years regardless of appearance
Visible damage: Sidewall damage — bulges, cracks, exposed cords, or separations — replace immediately
Chronic problems: Repeated air loss or persistent vibration — have a technician inspect them

Quick tread tests:

Penny test (2/32 in): Insert a penny into a tread groove with Lincoln's head down. If you can see all of Lincoln's head, you're at or below the legal minimum — replace now.
Quarter test (4/32 in): Insert a quarter with Washington's head down. If you can see all of Washington's head, wet-weather traction is compromised — start shopping.

What Tread Depth Is Unsafe?

Here's the honest answer: The legal limit and the safe limit aren't the same thing.

The U.S. legal minimum is 2/32 in (1.6 mm). Drive below that and your tires are worn out — full stop. But NHTSA recommends replacement at 4/32 in (3.2 mm), because wet stopping distances increase significantly before you ever hit the legal floor. For winter tires, you'll want to replace them when tread drops below 5–6/32 in (4.0–4.8 mm) — snow traction drops off well before you hit the legal limit.

6/32 in (4.8 mm): Good — keep an eye on it
4/32 in (3.2 mm): Wet traction is reduced — plan to replace
2/32 in (1.6 mm): At the legal limit — replace now
Winter tires at 5–6/32 in: Replace before winter season

Do Tires Expire by Age?

Tread depth is easy to check. Tire age is easy to overlook.

Rubber degrades over time whether you're driving on it or not. Heat cycles, UV exposure, and oxidation all break down the compounds inside a tire, and that process happens even if the tread looks fine.

Most major manufacturers, including Michelin and Continental, recommend having tires inspected at every service visit once they hit 6 years old, and replaced by 10 years — no exceptions, regardless of how much tread is left.

How to find your tire's age:

Look for the DOT code on the sidewall. The last four digits tell you when the tire was made — the first two are the week, the last two are the year. A code ending in 2419 means the 24th week of 2019. We cover this in a related post, Cracking DOT Tire Codes: Find Where and When Your Tires Were Made.

One more thing on mileage: You'll often see tire guides say "replace every 40,000–100,000 miles." That range is too wide to be useful on its own. A tire's mileage life depends on the tire type, your driving habits, air pressure, rotation, and load. Your warranty mileage is a starting point — not a finish line.

Replace-by Thresholds by Tire Type

Different tires start with different tread depths and wear at different rates. Here's a quick reference:

Tire Type	New Tread Depth (approx.)	Replace At	Notes
All-season	10/32 in (7.9 mm)	4/32 in (3.2 mm)	Wet traction drops significantly below 4/32 in
All-weather	10–11/32 in (7.9–8.7 mm)	4/32 in (3.2 mm)	Handles light snow but not a substitute for dedicated winter tires below this depth
Summer / performance	10/32 in (7.9 mm)	4/32 in (3.2 mm)	No tread bars for snow — already unsafe in cold
Winter / snow	10–11/32 in (7.9–8.7 mm)	5–6/32 in (4.0–4.8 mm)	Snow and ice grip degrades above legal min
All-terrain	14–17/32 in (11.1–13.5 mm)	4/32 in (3.2 mm) on-road; 6/32 in off-road	Deep lugs wear more slowly but unevenly off-road
Mud-terrain	18–20/32 in (14.3–15.9 mm)	6/32 in (4.8 mm) off-road	Designed for soft terrain — not safe at 2/32 in off-road

One more thing: New tread depth varies by model. A budget all-season and a premium grand touring tire are both "all-season" but may start at different depths. The figures above are typical ranges, not specs that apply to every tire in that category.

What Are the Warning Signs I Need New Tires?

Some replacement triggers are obvious; others are easy to miss. Watch for these:

Sidewall bulge or bubble: A blowout waiting to happen. Don't drive on it. Replace immediately.
Visible cords or wires: The tire's inner structure is exposed. Replace immediately.
Cracks in the sidewall: A sign of age-related rubber breakdown. Have a technician assess.
Repeated air loss: Could be a valve stem, bead leak, or structural issue. Get it inspected.
Vibration or handling changes: Can point to wear, damage, or something else entirely — don't ignore it.

For a deeper look at each of these, including how to spot them and what causes them, see our related post: 5 Signs You Have Bad Tires.

One more thing: A puncture in the center tread — not the sidewall or shoulder — may be repairable if it's ¼ inch or smaller. A certified technician should make that call.

How Many Miles Do Different Tire Types Typically Last?

Tire mileage is one of those things that varies more than most people expect. Your driving habits, road conditions, air pressure, rotation schedule, and load all play a role. That said, here are guidelines on how many miles on tires before replacing under normal driving conditions:

Tire Type	Typical Range	What affects mileage most
All-season (standard)	50,000–70,000 miles	Regular tire rotation and consistent tire pressure matter most
All-weather	40,000–60,000 miles	Designed for year-round use including light snow; harder compounds than winter tires extend tread life.
Touring / grand touring	60,000–80,000 miles	Built with higher UTQG treadwear ratings, touring tires are designed to last longer.
Summer / performance	20,000–40,000 miles	Softer summer tire compounds grip better but wear faster.
Winter / snow	25,000–40,000 miles	Soft rubber in winter tires wears faster; removing them in spring extends their life.
All-terrain	40,000–60,000 miles	How much off-road driving you do — all-terrain tires wear faster on trails than pavement.
Mud-terrain	30,000–50,000 miles	Aggressive lugs on mud-terrain tires wear unevenly, especially on pavement.

One more thing: Your warranty mileage is a starting point, not a guarantee. Most mileage warranties require documented proof of regular rotation and proper inflation to make a claim. Keep your service records.

Common Tire Replacement FAQs

Can I replace only two tires?

Yes — but put the new tires on the rear axle, regardless of whether your vehicle is FWD, RWD, or AWD. Better tread in the rear reduces the risk of losing control in wet conditions. You may be interested in this post on mismatched tires or this one on tires for AWD versus 4WD and other drive systems.

Do I need an alignment when I get new tires?

Wheel alignment and tire balancing are strongly recommended, and mandatory if your old tires showed uneven wear. Skipping it shortens the life of your new tires. We cover this topic in depth in this post: Wheel Alignment and Tire Balancing: What Every Driver Should Know.

What does vibration or uneven wear mean — repair or replace?

It depends on the cause. Some vibration is fixable without replacing tires; some uneven wear patterns signal a bigger problem. We explain what it means when your car shakes or vibrates when driving in this post: 5 Signs You Have Bad Tires.

How do I read the DOT date code?

The Tire Agent has a series of posts that explain how to crack DOT tire codes:

Shop tires for your vehicle at tireagent.com. Flexible payment options available — including plans with no credit check required.

About the author

Jessica Palma

Jessica Palma brings 23 years of hands-on automotive experience and a passion for all things tires, wheels, and fitment. Known for her down-to-earth style and deep industry knowledge, Jessica loves helping others feel confident and inspired to dive into the world of cars and trucks.