* Check the sticker on your driver's side doorjamb: This sticker will list the recommended tire size and inflation pressure for your specific vehicle. This is the most reliable source.
* Check your owner's manual: The owner's manual will also specify the correct tire size.
Common sizes included:
* P225/75R15: This was a very common size.
* P235/75R15: Also frequently used.
Without checking your vehicle's documentation, it's impossible to give you the definitively correct answer.
