285/70r17 vs 255/75r17 Tire Size
You have probably heard the terms 285 70r17 and 255 75r17 before, but you may need to learn what they mean and how they affect your vehicle. These tire sizes are standard among SUVs, trucks, and other off-road vehicles. While these numbers sound complicated, understanding them is pretty simple.
Both sizes have pros and cons, so it can take time to decide which one to go with. This blog post will compare and contrast the two sizes and help you decide which is right for you!
285 70r17 vs 255 75r17 Table
285 70r17 | 255 75r17 |
Overall Diameter 32.71 inches | Overall Diameter 32.06 inches |
Width 11.22 inches | Width 10.04 inche |
Sidewall Height 7.85 inches | Sidewall Height 7.53 inches |
Radial Tire (A Radial-Ply Tire) | Radial Tire (A Radial-Ply Tire) |
Rim Size 18 inches | Rim Size 18 inches |
Circumference 102.76 inches | Circumference 100.72 inches |
Revs Per Mile 616 | Revs Per Mile 629 |
What Does 255 75r17 tire Mean?
The 255 75r17 tires are a bit smaller than the 285 70r17s. The first number, “255,” is the tire’s width in millimeters. The second number, “75,” is the height of the tire’s sidewall or aspect ratio.
This means the sidewall is 75% as tall as the tire’s width. The “r” in both sizes stands for radial, and the last number, “17,” is the diameter of the wheel that the tires will fit on.
Tire Diameter
This is also called the “tall” of the tire. The 285 70r17 has a diameter of about 32.71 inches, while the 255 75r17 has a diameter of approximately 32.06 inches. The difference between these numbers is not much, but it can affect how your vehicle handles it. The difference between those two tire sizes is 0.65 inches or 2%.
Section Width
The section width is the width of your tire from sidewall to sidewall. The 285 70r17 has a section width of 11.22 inches, while the 255 75r17 has a section width of about 10.04 inches. These two sizes are 1.18 inches or about 11.8%.
As you can see, the 285 70r17 is a wider tire than the 255 75r17. This means it will have a wider contact patch with the ground, providing better traction.
Circumference
The circumference of a tire is the distance around the outside of the tire. The 285 70r17 has a circumference of about 102.76 inches, while the 255 75r17 has a circumference of about 100.72 inches.
This difference might not seem like much, but it can affect how your vehicle handles it. A smaller circumference will make your vehicle feel more responsive. In comparison, a larger circumference will make your vehicle feel more stable.
Revolutions Per Mile
This is the number of times your tire will go around in a mile. The 285 70r17 has revolutions per mile (RPM) of about 616, while the 255 75r17 has an RPM of about 629. The difference in the revolutions per mile is around 7.76 or 2%.
This difference might not seem like much, but it can make a difference in how your vehicle handles it. A higher RPM will make your vehicle more responsive, while a lower RPM will make your vehicle feel more stable.
Sidewall Height
The 285 70r17 has a sidewall height of about 7.85 inches, while the 255 75r17 has a sidewall height of about 7.53 inches. The difference between these two sizes is about 0.32 inches or 4.3%. As you can see, the 285 70r17 has a taller sidewall than the 255 75r17. This can provide a smoother ride, but it can also make your vehicle feel less stable.
Wheel Size
Rim size is the measurement of a wheel’s diameter. The 285 70r17 has a wheel size of about 17 inches, while the 255 75r17 has a wheel size of about 17 inches. As you can see, both tire sizes can fit in the 17 inches rim size.
Construction Type
Both the 285 70r17 and 255 75r17 are radial tires. Radial tires are the most common type of tire on the market today. They are characterized by the steel belts that run radially (from the center of the tire to the edge) across the tread. Radial tires provide a smoother ride and better handling than other tires.
Our Observation
After discussing all the features of both 285 70r17 and 255 75r17, we can see that both have their own pros and cons. If you want a wider tire with a bigger contact patch, go for the 285 70r17. If you are looking for a tire that is a bit taller and provides a smoother ride, then go for the 255 75r17. It depends on your personal preference.
Conclusion
Both tires are good choices, so make sure to do your own research before making a decision. Thanks for reading! We hope this article was helpful. What are your thoughts on the 285 70r17 and 255 75r17 tire sizes? Let us know in the comments below!
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