Start with your car's tire size and load rating

The correct tire size for your car is printed on a sticker inside the driver's door jamb, on the fuel door, or in your owner's manual. It looks like this: 225/45R17 91W. That string of numbers and letters tells you the width, sidewall height, wheel diameter, and how much weight each tire can carry. Do not guess or use a size that looks close — using the wrong size can affect your speedometer accuracy, fuel economy, and how your car handles.

The load rating (the number at the end, like 91 in the example above) matters because it tells you the maximum weight each tire can support. Your car's door jamb sticker shows the exact tire size and load index your manufacturer recommends. If you buy a tire with a lower load rating than what's listed, you're underloading your car, which can cause premature wear and handling problems.

Key Takeaways

  • Your car's correct tire size is printed on a sticker inside your driver's door jamb or fuel door — use that exact size, not a similar one.
  • The load rating (the number at the end of the tire code) must match or exceed what your manufacturer recommends on that same sticker.
  • All-season tires work for most climates, but winter tires are necessary if you live where temperatures regularly drop below 45°F or snow falls.
  • Tire prices vary widely by brand and quality; budget tires cost less upfront but may wear faster and offer fewer safety features than mid-range options.
  • Once you buy tires, a tire shop can mount and balance them, and you should have them rotated every 5,000 to 7,000 miles to extend their life.

Understand the difference between all-season, winter, and summer tires

All-season tires are the default choice for most drivers. They handle dry roads, light rain, and light snow reasonably well, and they last longer than winter tires. If you live somewhere that rarely freezes and you don't drive in snow, all-season tires are usually sufficient.

Winter tires have a different rubber compound that stays flexible in cold weather, plus deeper tread patterns designed to grip snow and ice. If you live where temperatures regularly drop below 45°F or where snow falls, winter tires are worth the cost — they reduce stopping distance on ice and snow by 20 to 30 percent compared to all-season tires. You swap them on in fall and switch back to all-season in spring, so you need two sets of wheels or two sets of tires plus mounting labor twice a year.

Summer tires are designed for warm weather and high performance. They have less tread depth and a harder rubber compound, which means they grip well on dry pavement but perform poorly in cold or wet conditions. Unless you drive a sports car or live in a warm climate year-round, summer tires are not practical for most people.

Compare tire brands and quality levels

Tire prices vary widely. Budget brands (like Westlake, Kumho, or store brands) cost $50 to $100 per tire and are made by smaller manufacturers. They meet safety standards but may wear faster and offer fewer features like noise reduction or longer tread-life warranties. Mid-range brands (like Goodyear, Michelin, or Bridgestone) cost $100 to $200 per tire and typically last longer, come with longer warranties (often 40,000 to 60,000 miles), and offer better handling and comfort. Premium brands (like Continental, Pirelli, or Yokohama) cost $150 to $300 per tire and are designed for performance, longevity, or specific driving conditions.

The right choice depends on your budget and how long you plan to keep the car. If you're selling in two years, budget tires may make sense. If you plan to keep the car longer, a mid-range tire usually costs less per mile over its lifetime because it lasts longer and wears more evenly.

Check the tire's tread-wear warranty and ratings

Tire manufacturers print a tread-wear warranty on the sidewall or in the product description — for example, "40,000-mile warranty" means the manufacturer will replace the tire if it wears out before 40,000 miles under normal driving. This is not a may provide the tire will last that long; it's a promise that if it fails sooner, they'll replace it. Longer warranties usually indicate a more durable tire.

The tire's sidewall also shows a UTQG rating (Uniform Tire Quality Grade), which includes a tread-wear number (200, 300, 400, etc.). A higher number means the tire is designed to last longer. A 300 tread-wear rating means the tire should last about 30,000 miles; a 500 rating suggests 50,000 miles. These are estimates, not guarantees, and actual mileage depends on your driving habits, road conditions, and how well you maintain tire pressure and alignment.

Decide where to buy and have tires installed

You can buy tires from tire shops (like Discount Tire or Firestone), big-box retailers (like Costco or Sam's Club), online retailers (like Tire Rack or Amazon), or car dealerships. Tire shops and big-box stores usually offer mounting and balancing as part of the purchase or for a small fee ($15 to $30 per tire). Online retailers often ship to a local installer, though you may pay a separate mounting fee.

When you buy tires, ask whether the price includes mounting, balancing, and valve stems. Mounting is the process of fitting the tire onto the wheel; balancing uses weights to may support the tire spins evenly. Both are necessary for safe driving and a smooth ride. Some shops also offer services like tire rotation, alignment checks, or road hazard warranties (which cover damage from potholes or punctures) for an additional cost.

Maintain your tires after purchase

Check your tire pressure once a month and before long trips. The correct pressure is printed on your door jamb sticker, not on the tire itself — the number on the tire is the maximum pressure, not the recommended pressure. Underinflated tires wear faster and reduce fuel economy; overinflated tires wear unevenly and can fail suddenly. Most gas stations have free air pumps, and many tire shops will check pressure for free.

Have your tires rotated every 5,000 to 7,000 miles. Rotation moves tires from one position to another (front to back, or side to side) so they wear evenly. Without rotation, front tires often wear faster than rear tires, and you may need to replace them sooner. Many tire shops include free rotations for a year or two after purchase.

Check your wheel alignment if you notice your car pulling to one side or if tires are wearing unevenly. Misalignment causes tires to wear at an angle, shortening their life. An alignment costs $75 to $200 and can add thousands of miles to your tire life.

Frequently Asked Questions

Can I use a different tire size if it looks the same?

No. Even a small difference in tire size affects your speedometer, fuel economy, and how your car handles. Use the exact size listed on your door jamb sticker. If you want a different size — for example, to fit larger wheels — consult your car's manufacturer or a tire professional to find an approved alternative.

Do I need to replace all four tires at once?

For safety, yes. Replacing only two tires creates a mismatch in tread depth and grip, which can cause handling problems and increase the risk of losing control in wet or slippery conditions. If budget is tight, replace the two front tires first (they wear faster), then the rear tires when they're worn. But plan to replace all four within a reasonable time.

What does the age of a tire matter if the tread looks fine?

Tire rubber degrades over time, even if the tire is not being driven. Tires older than six to ten years should be replaced regardless of tread depth because the rubber becomes brittle and more likely to fail. Check the sidewall for a four-digit code (like 2418) — the first two digits are the week, the last two are the year. A tire made in week 24 of 2018 is now several years old.

Should I buy a road hazard warranty?

Road hazard warranties cover damage from potholes, nails, or debris and typically cost $10 to $25 per tire. If you drive in areas with rough roads or heavy traffic, the warranty may pay for itself. If you drive mostly on well-maintained roads, it's probably not necessary. Ask the shop what the warranty covers — some cover only punctures, others cover sidewall damage too.

How do I know if my tires are worn out?

Use the penny test: insert a penny into the tread with Lincoln's head upside down. If you can see the top of his head, the tread is too shallow and the tires need replacement. Legally, tires must have at least 2/32 inch of tread depth. Many tire shops will check this for free, and some will replace tires for free if they fail the test within a certain time after purchase.