* The sticker on the driver's side doorjamb: This sticker lists the recommended tire size and inflation pressure. This is the most reliable source.
* Your owner's manual: The manual will specify the recommended tire sizes.
* The sidewall of your existing tires: The size is printed on the sidewall of each tire (e.g., P225/60R16).
Using the information above, you'll find your original tire size. Then, you can look for slightly larger or smaller tires that are within acceptable parameters. Going too far outside these parameters can affect your speedometer accuracy, handling, and potentially damage your car. A tire shop can help you choose suitable alternatives if you're unsure.
Remember, simply knowing the year and model isn't enough to determine the correct tire size. You *must* check your vehicle's documentation or the tire sidewall.
