How to read a tire size
Take a common size, P225/60R16 98H:
| P | Passenger tire (LT means light truck) |
| 225 | Tire width in millimeters |
| 60 | Aspect ratio: sidewall height as 60% of the width |
| R | Radial construction |
| 16 | Fits a 16-inch wheel |
| 98 | Load index: how much weight each tire can carry |
| H | Speed rating (H = up to 130 mph) |
The recommended size and pressure for your car are also on the sticker in the driver's door jamb. Match the load index and speed rating at least, unless your owner's manual says otherwise.
Which type of tire?
- All-season: the default on most cars. Fine in rain and light snow, but not built for severe winter.
- All-weather: carries the three-peak mountain snowflake symbol, meaning it passed a severe-snow traction test, yet can stay on all year. A good fit where winters are snowy but you don't want two sets.
- Winter: the best grip on snow and ice, but wears quickly in warm weather. Swap them out in spring.
- All-terrain: for trucks and SUVs that see gravel or dirt. Expect more road noise.
- Touring / performance: touring tires favor comfort and long tread life; performance tires favor grip at the cost of tread life.
An "M+S" (mud and snow) marking alone does not mean a tire passed a snow test. For real winter traction, look for the mountain snowflake.
Wheels: what to check before you buy
Aftermarket wheels must match your car's bolt pattern, center bore and offset, plus the right size. Get these wrong and the wheel won't fit or will rub. Online wheel retailers can filter by vehicle; use that rather than guessing. If your car has a tire pressure monitoring system (TPMS), plan for sensors in the new wheels.
Paying less
- Compare the installed price: mounting, balancing, valve stems or TPMS service and disposal fees add up.
- Watch for manufacturer rebates, which run several times a year.
- Buy online and ship to a local installer.
- Compare treadwear warranties. A tire that lasts much longer can be the cheaper buy.
Looking after the tires you have? Our sister site Gas Saving Tips covers tire pressure, tread checks and rotation.
Where to buy tires and wheels
Some links on this page are affiliate links: if you buy or book through them we may earn a commission, at no extra cost to you. How we make money.
Tire Rack
Tires and wheels with fitment by vehicle, owner surveys and their own testing. Ships to you or a local installer.
Shop Tire Rack →Discount Tire
A large tire chain (America's Tire in some areas). Buy online and choose a store for installation.
Find a store →Frequently asked questions
Can I put a different size tire on my car?
Stick to the size on your door-jamb sticker unless a tire professional confirms an alternative. A different overall diameter changes speedometer readings and can affect stability systems.
What does the speed rating mean?
It is the maximum sustained speed the tire is rated for. Common ratings include S (112 mph), T (118 mph), H (130 mph) and V (149 mph). Don't go below what your car came with.
Do I need winter tires?
If you regularly drive on snow and ice, winter or all-weather tires with the mountain snowflake symbol give far better grip than standard all-seasons.