To be absolutely certain, you should:
* Check the owner's manual: This is the most reliable source.
* Look at the existing wheel: The lug pattern is stamped on the wheel itself.
* Check the inside of the driver's side doorjamb: Sometimes the tire and wheel specifications are listed on a sticker there.
Don't rely solely on online information, as variations exist based on options and regional specifications. Always confirm before buying new wheels or tires.