* Check the sticker on your driver's side doorjamb: This sticker lists the recommended tire size and inflation pressure for your specific vehicle. This is the most reliable source.
* Look at the sidewall of your existing tires: The size is printed on the sidewall of each tire.
* Consult your owner's manual: The owner's manual will specify the recommended tire sizes.
Common tire sizes for a 2003 Dodge Ram 1500 include, but are not limited to:
* LT245/75R16: A very common size.
* LT265/75R16: Another common size, slightly larger than the above.
* P265/70R17: More common on higher trim levels or with optional wheels.
* Other sizes: Other sizes were possible depending on factory options and aftermarket upgrades.
Don't rely on general information. Always check your doorjamb sticker or your existing tires for the definitive answer. Using the wrong size tires can negatively affect your truck's handling, speedometer accuracy, and potentially damage your drivetrain.
