275/70r18 vs 285/75r18 Tire Size
When buying new tires, most people have a lot of questions. So many tire sizes and options can take time to choose the right one for you and your car. One of the most common questions is whether or not there is a difference between 275 70r18 and 285 75r18 tires.
Which one is better? Which size should you get? Let’s look at the differences between those tire sizes and see which is best for you.
275 70r18 vs 285 75r18 Table
275 70r18 | 285 75r18 |
Overall Diameter 33.16 inches | Overall Diameter 34.83 inches |
Width 10.83 inches | Width 11.22 inche |
Sidewall Height 7.58 inches | Sidewall Height 8.42 inches |
Radial Tire (A Radial-Ply Tire) | Radial Tire (A Radial-Ply Tire) |
Rim Size 18 inches | Rim Size 18 inches |
Circumference 104.17 inches | Circumference 109.42 inches |
Revs Per Mile 608 | Revs Per Mile 579 |
What Does 275 70r18 tire Mean?
This size is ideal for those who want a balance between speed and traction. The 275 70r18 tires offer good grip and handling, making them great for both on and off-road driving. However, the downside of this tire size is that it can be more expensive than other sizes.
The “275” in 275 70r18 refers to the tire’s width in millimeters. The “70” is the aspect ratio, which tells you how tall the sidewall is concerning the width. The “r” stands for radial, and the “18” is the diameter of the wheel in inches.
Tire Diameter
Tire diameter helps you to understand the height of your tire. A taller tire will give you more ground clearance, which is essential if going off-road. Conversely, a smaller tire will be better for fuel economy and speed.
The diameter of the 285 75r18 tire size is 34.83 inches, while the diameter of the 275 70r18 tire size is 33.16 inches. The difference between those two tire sizes is 1.67 inches or 5%.
Section Width
A wider tire will give you more stability and grip, but it will also be heavier and have more rolling resistance. This is why most racing tires are very wide. The section width of the 285 75r18 tire size is 11.22 inches, while the section width of the 275 70r18 tire size is 10.83 inches.
The difference between those two tire sizes is 0.39 inches or 3.6%. As you can see, the 285 75r18 tires are more comprehensive and have a taller sidewall than the 275 70r18 tires.
Circumference
This measurement is important because it tells you how far your vehicle will travel with one tire revolution. The circumference of the 285 75r18 tire size is 109.42 inches, while the circumference of the 275 70r18 tire size is 104.17 inches. The difference between those two tire sizes is 5.26 inches or 5%.
Revolutions Per Mile
This measurement is crucial because it tells you how many times your tires will rotate in one mile. The lower the number, the fewer times your tires will rotate and the further you will travel.
The revolutions per mile of the 285 75r18 tire size are 579, while the revolutions per mile of the 275 70r18 tire size are 608. The difference between those two tire sizes is 29 RPM or 4.8%. As you can see, the RPM of 275 70r18 tire size is more than 285 75r18.
Sidewall Height
The sidewall height is important because it tells you how much cushioning your tires will have. A taller sidewall will give you a smoother ride, but it will also make your vehicle less stable.
The sidewall height of the 285 75r18 tire size is 8.42 inches, while the sidewall height of the 275 70r18 tire size is 7.58 inches. The difference between those two tire sizes is 0.84 inches. As you can see, the 285 75r18 tires have a taller sidewall than the 275 70r18 tires.
Wheel Size
The wheel size is important because it tells you the diameter of your wheels. The wheel size of the 285 75r18 tire size is 18 inches while the wheel size of the 275 70r18 tire size is 18 inches. Both tire sizes can mount in 18-inch wheel sizes.
Construction Type
The construction type is essential because it tells you how the tire was made. The most common construction types are radial and bias-ply. Radial tires are created with steel belts that run around the tire’s circumference.
The 285 75r18 tire size’s construction type is radial, while the 275 70r18 tire size is radial. Both tire sizes are radial tires. Radial tires are the most common type of tire, and they’re known for their durability, fuel efficiency, and grip.
Our Observation
The main difference between 275 70r18 and 285 75r18 tire sizes is the Sidewall Height. The 285 75r18 tire size is 0.84 inches or 11% taller than the 275 70r18 tire size. The 285 75r18 also has a wider tread width and is slightly larger in diameter. Both tire sizes have the same wheel size and construction type.
Conclusion
If you’re looking for a big, beefy tire with a lot of grips, then the 285 75r18 is the better choice. If you’re looking for a little lighter tire with lower rolling resistance, then the 275 70r18 is the better choice.
We hope you found this blog post helpful. If you have any questions, feel free to leave a comment below. And if you’re looking for new tires, check out our selection of 275 70r18 and 285 75r18 tires. Thanks for reading!
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