2018 RAM 2500 Tire Sizes

The 2018 Ram 2500 tire sizes listed here are 245/70R17, 265/70R17, 275/70R18, 285/55R20, and 285/70R17. These are tire-size designations, not a recommendation that every size fits every truck. The applicable size depends on the vehicle’s original equipment and configuration, so match the listing to your Ram before choosing replacement tires.

The numbers and letters describe tire dimensions and construction, while the final number indicates the wheel diameter. The listed sizes cover more than one wheel diameter, so do not select a tire based on appearance or a partial match alone. Check the tire information on the driver-side door jamb or consult the owner’s manual to confirm the correct size for your truck.

The facts provided list sizes for the 2018 model year but do not identify which trim, engine, or individual configuration uses each size. Equipment can vary across versions of the Ram 2500, and the list alone cannot determine the original fitment for a particular vehicle. If your door-jamb label or owner’s manual specifies a figure not shown here, confirm the correct size there before buying tires.