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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.

What years to avoid for the 5.7 Hemi RAM 1500?


Years to avoid for the 5.7L Hemi Ram 1500 include 2011-2012, primarily for "Hemi tick" and lifter issues, and 2014, due to reports of catastrophic steering failures. Other years to approach with caution are 2018-2019, due to electrical and infotainment system problems, and 2004 and 2013-2015, which have documented issues with engine stalling and transmission failures, respectively.
 
Years to be cautious of

  • 2011-2012: Notorious for "Hemi tick" from failed lifters or other engine issues. 2011 also had reports of engine failure, MDS issues, and water pump failures. 
  • 2013-2015: Documented severe transmission failures, particularly in 2013 and 2015 models. 2015 also had numerous recalls and problems with its electrical, transmission, engine, and fuel systems. 
  • 2014: Several complaints have logged total steering loss, sometimes at highway speeds. 
  • 2018-2019: Reports of issues with electrical and infotainment systems are more common. 
  • 2004: Engine stalling issues persisted, and there were power train concerns. 

What to look for in a reliable Hemi Ram 1500
  • 2010: Generally has better engine reliability, though it was known for a weak engine combined with poor fuel economy. 
  • 2018 and newer: The 5.7L Hemi V-8 is considered more reliable in these years. 
  • 2020 and newer: Models have fewer issues than late 2010s versions. 
  • Ram 1500 Classic models: These are also reported to do well, having fewer complex systems than the redesigned 2019 and newer models. 



What size tires are on a 2017 Ram 1500 20 inch?


P275/60R20 Tires for 2017 Ram 1500 Big Horn | Big O Tires.



What size are stock RAM 1500 tires?


Stock Ram 1500 tire sizes vary by model year and trim level, but common options include 275/65R18, 275/60R20, and 275/55R20. Some higher-end trims or special packages may use different sizes, such as 285/45R22 for the Limited Longhorn or LT275/70R18 E for the Rebel. To find the exact size for your truck, check the placard on the driver-side door jamb or your owner's manual. 
Common stock tire sizes

  • 275/65R18: Frequently found on mid-level trims like the Big Horn. 
  • 275/60R20: Used on trims like the Laramie and Limited, as well as some special editions. 
  • 275/55R20: Often seen on the Tradesman and other trims. 
  • 285/45R22: A common size for high-end or sport packages, such as the Limited Longhorn. 
  • LT275/70R18 E: Standard for the Rebel trim. 

How to confirm the correct size for your truck
  • Check the driver-side door jamb: A sticker inside the driver's door frame will list the exact tire size, load rating, and recommended tire pressure. 
  • Consult your owner's manual: The manual provides specific tire recommendations based on your truck's model and trim. 
  • Read the tire sidewall: The tire code (e.g., 275/60R20) printed on the side of the tire will tell you its size. 



What size are stock wheels on a 2019 RAM 1500?


The stock rim sizes for a 2019 Ram 1500 are typically 18x8 inches, 20x8 inches (or 20x9 inches depending on trim), and 22x9 inches, all with a 6x139.7mm (6x5.5") bolt pattern. The exact size varies by trim level and options. 

Rim Size Examples
18 inches 18x8 with a 19mm offset (often on Rebel models)
20 inches 20x8 with a 19.05mm offset or 20x9 with a 19.05mm offset
22 inches 22x9 with a 19.05mm offset
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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.