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What is the stock tire size on a Ram 1500?

The standard tire size for a Ram 1500 pickup truck is 275/65R18. This tire size provides a balance of performance, comfort, and fuel efficiency for the Ram 1500's intended use as a versatile, full-size truck.


Understanding the Ram 1500 Tire Size Specification


The tire size specification for the Ram 1500 is broken down as follows:



  • 275 - This is the tire's width in millimeters.

  • 65 - This is the aspect ratio, which is the ratio of the tire's sidewall height to the tread width. A 65 aspect ratio means the sidewall height is 65% of the tread width.

  • R - This indicates the tire has a radial construction, which is the most common type of tire construction today.

  • 18 - This is the wheel diameter in inches that the tire is designed to fit.


The 275/65R18 tire size is the standard configuration for the base model Ram 1500, though higher trim levels may come equipped with larger 20-inch or 22-inch wheels and tires.


Factors Influencing Ram 1500 Tire Size


The 275/65R18 tire size was chosen by Ram engineers to provide a good balance of attributes for the Ram 1500:



  • Ride Comfort: The 65 aspect ratio provides a taller sidewall that helps absorb bumps and provide a smooth, comfortable ride.

  • Traction and Capability: The 275 mm width gives the tires good grip and off-road capability, important for a full-size truck.

  • Fuel Efficiency: The 18-inch wheel diameter is smaller than optional 20-inch or 22-inch wheels, which helps reduce rolling resistance and improve fuel economy.


Ultimately, the standard 275/65R18 tire size is well-suited for the Ram 1500's intended use as a versatile, capable, and efficient full-size pickup truck.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.