315/70r17 vs 285/70r17 Tire Size
When buying a new tire, most drivers probably never think about the size of the tire; they just look at the price and brand. However, if you’re going to be driving on rough terrain or even on gravel roads, you need to know more about your tire size. There are three main sizes for tires: small, medium, and large. Which size is best for you? Read on to find out!
315 70r17 vs 285 70r17 Tire Size
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What Does 315 70r17 Tire Mean?
The 315 70r17 tire size is famous for many trucks and SUVs. This size offers a balance of traction, comfort, and durability. The “315” refers to the width of the Tire in millimeters.
The “70” refers to the aspect ratio, which is the height of the tire sidewall relative to the width. The “r” indicates that the Tire is a radial tire. The “17” refers to the diameter of the wheel in inches.
What Does 285 70r17 Tire Mean?
This size is very similar to the 315 70r17 dimensions. This size may be a good choice if you’re looking for a little more agility and fuel efficiency. The first number 285 refers to the width of the Tire in millimeters.
The second number, 70, still refers to the aspect ratio or height of the sidewall. The “r” still stands for radial, and the last number, 17, is still the diameter of the wheel in inches.
Tire Diameter
The diameter is the main difference between the 315 70r17 and 285 70r17 tire sizes. The 315 tires have a diameter of 34.36 inches, while the 285 tires have a diameter of 33.26 inches. This difference in diameter can affect the overall height of your vehicle. The final difference in the diameter is 1.1 inches or 3.2%.
Section Width
The section width is the width of the Tire from sidewall to sidewall. The 315 70r17 has a section width of 12.4 inches. The 285 70r17 has a section width of 11.61 inches. This difference in section width is 0.79 inches or about 6.3%.
Wider sidewall tires provide better traction and stability but may decrease fuel economy. Narrower sidewall tires may improve fuel economy but can decrease comfort and handling.
Circumference
The circumference of a tire is the distance around the outside of the Tire. The 315 70r17 has a circumference of 107.95 inches. The 285 70r17 has a circumference of 104.49 inches. This difference in circumference is about 3.2%. A larger tire covering more ground per revolution can slightly improve fuel economy.
Revolutions Per Mile
The revolutions per mile (RPM) measure how far a tire will travel in one mile. The 315 70r17 has an RPM of 586, while the 285 70r17 has an RPM of 616. This difference in RPM is about 3.3%. A higher RPM means the Tire will cover more ground in one mile.
Sidewall Height
The sidewall height is the distance from the edge of the wheel to the top of the Tire. The 315 70r17 has a sidewall height of 8.68 inches. The 285 70r17 has a sidewall height of 8.13 inches.
This difference in sidewall height is about 0.55 inches or about 6.3%. A taller sidewall height provides more cushioning and comfort but can decrease handling. A shorter sidewall height can improve handling but may decrease comfort.
Wheel Size
Rim size is an essential factor to consider when choosing a tire size. The 315 70r17 is typically mounted on wheels that are 17 inches in diameter. The 285 70r17 is generally mounted on wheels that are 17 inches in diameter. Both of these sizes can also be mounted on 17-inch wheels.
Construction Type
The 315 70r17 and 285 70r17 are both radial tires. Radial tires have steel belts that run perpendicular to the direction of travel. These tires are designed for extended wear and high speed.
Suitable Vehicle
285/70R17 tires were at the height of popularity in the mid-2000s but came back even stronger in 2019. You can find them on Jeeps, light trucks, and larger SUVs like the Jeep Wrangler Rubicon, RAM 2500 Power Wagon, and Ford Bronco.
The 315/70R17 tire size can be found on a few vehicles from the early 2000s like the Hummer and 2010-2020 Ford F-150 Raptors. If you’re considering taking your car off-roading, these are two great models to explore.
Our Observation
The main difference between 315 70r17 and 285 70r17 Tire Size is in the section width. The 315 70r17 is a wider tire and may provide better traction but decrease fuel economy. The 285 70r17 is a narrower tire and may improve fuel economy but can decrease comfort and handling.
Conclusion
Picking the correct tire size is important for many reasons. The right size can improve fuel economy, comfort, and handling. The wrong size can have the opposite effect. Comparing 315 70r17 and 285 70r17 tires can help you decide which size is right for you.
We hope you found this post helpful. If you have any questions, please feel free to contact us. Thank you for reading! We hope this post was helpful. If you have any questions, please feel free to contact us. Have a great day!
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Meet Caitlin McCormack, a Tire Size Expert and Blogger Passionate About Everything Related to Tires. With Years of Experience in the Tire Industry, Caitlin Has Become an Expert in Tire Sizes and Their Impact on Vehicle Performance.