Confirm Tire SizeShopping for tires? Select tire size to proceed.
2025 Ram 1500 Big Horn
Ram equips your vehicle with more than one possible size during production.
Please select the size installed on your vehicle from the choices below.
Original Equipment Wheel Diameter: 18"
275/65R18Original Equipment Wheel Diameter: 20"
275/55R20 Where can I find my tire size?