285/65r20 vs 275/65r20 Tire Size
Are you trying to decide between 285 65r20 and 275 65r20 tires? Maybe you’ve heard some things about the two tire sizes, but they haven’t quite sunk in. Which of these tire sizes is best for your vehicle? Is one of them safer than the other? Is one of them more fuel-efficient than the other?
Does one of them handle better or provide more traction in the snow? Do they both operate on exactly the same rim and have the same amount of tread depth? If you’re still a little confused, this blog post will clear things up for you.
285 65r20 vs 275 65r20 Table
Let’s look at the pros and cons of each tire size so that you can make an informed choice about which set of tires you should buy for your car, truck, or SUV.
285 65r20 | 275 65r20 |
Overall Diameter 34.59 inches | Overall Diameter 34.07 inches |
Width 11.22 inches | Width 10.83 inche |
Sidewall Height 7.29 inches | Sidewall Height 7.04 inches |
Radial Tire (A Radial-Ply Tire) | Radial Tire (A Radial-Ply Tire) |
Rim Size 18 inches | Rim Size 18 inches |
Circumference 108.66 inches | Circumference 107.05 inches |
Revs Per Mile 583 | Revs Per Mile 591 |
What Does 275 65r20 Tire Mean?
The 275 65r20 tire size is a metric tire. The first number, “275,” is the tire’s width in millimeters. The second number, “65,” is the aspect ratio. This means that the tire’s height is 65% of the width.
The “r” stands for radial construction, and the final number, “20,” is the diameter of the wheel in inches. Now that we know what the numbers in 275 65r20 mean, let’s take a look at how this compares to the 285 65r20 tire size.
Tire Diameter
One of the most important aspects of a tire is its diameter. This is because the diameter of the tire has a direct impact on the gear ratio of the vehicle. The gear ratio is what determines how fast a vehicle can go in each gear.
The diameter of the 285 65r20 tire size is 34.59 inches, and the diameter of the 275 65r20 tire size is 34.07 inches. The difference between those two tire sizes is 0.51 inches or 1.5%.
Section Width
The section width of a tire is the width of the tire from sidewall to sidewall. The section width of the 285 65r20 is 11.22 inches, and the section width of the 275 65r20 is 10.83 inches. The difference in section width between these two tires is 0.39 inches or 3.6%.
Regarding section width, the 285 65r20 is a wider tire. This can be beneficial because a wider tire will provide more stability and traction. However, it is essential to note that a wider tire can also lead to increased rolling resistance.
Circumference
The circumference of a tire is the distance around the outside of the tire. The circumference of the 285 65r20 is 108.66 inches, and the circumference of the 275 65r20 is 107.05 inches. The difference in circumference between these two tires is 1.61 inches or 1.5%.
The 285 65r20 is a wider tire than the 275 65r20, but the 275 65r20 has a slightly larger circumference. This means that the 275 65r20 will have a somewhat smaller rolling radius. This can be beneficial because it can lead to improved fuel economy.
Revolutions Per Mile
A lower RPM can be beneficial because it reduces fuel consumption. It is important to note, however, that a lower RPM can also lead to a loss of traction. The RPM of the 285 65r20 is 583, and the RPM of the 275 65r20 is 591. The difference in RPM between these two tires is 1.5%.
Sidewall Height
The sidewall height of the 285 65r20 is 7.29 inches, and the sidewall height of the 275 65r20 is 7.04 inches. The difference in sidewall height between these two tires is 0.26 inches or 3.6%.
The 285 65r20 has a taller sidewall than the 275 65r20. This can be beneficial because it can provide a smoother ride. However, it is important to note that a taller sidewall can also lead to increased rolling resistance.
Wheel Size
The wheel size of the 285 65r20 is 20 inches, and the wheel size of the 275 65r20 is also 20 inches. This means there is no wheel size difference between these two tire sizes. Both the 285 65r20 and 275 65r20 have a 20-inch wheel size. This is the most common wheel size for passenger vehicles.
Construction Type
Both the 285 65r20 and 275 65r20 are radial tires. This is the most common type of tire construction. Radial tires are characterized by steel belts running radially around the tire. Radial tires are known for their durability and have a longer lifespan than other types of tires.
Suitable Vehicle
The 285/65r20 tire size is rapidly becoming a popular choice for large trucks, including semi-trucks, and dump trucks because of it’s excellent performance in regional, urban, long haul, and mixed service applications.
The 275/65R20 tire size is most frequently seen on pickup trucks such as the Chevrolet Silverado 3500 HD, Ford F-250 Super Duty, and GMC Sierra 2500 HD.
Our Observation
The main difference between 285 65r20 and 275 65r20 tire sizes is in the section width. The 285 65r20 tire size is 0.39 inches or 3.6% wider than 275 65r20 tire size. Besides that, there is not much difference between these two tire sizes. They both have the same wheel size and are both radial tires.
Conclusion
If you are looking for a wider tire, then the 285 65r20 is a good option. However, if you are looking for a tire with a slightly smaller rolling radius, the 275 65r20 is a good option. I hope this article has helped you understand the difference between 285 65r20 and 275 65r20 tire sizes.
Please feel free to leave a comment below if you have any questions. Also, be sure to check out our other articles on tire sizes! Thanks for reading!
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