275 70r18 vs 265 65r18 Tire Size
Whatever your vehicle, there’s a tire that’s perfect for the way you drive. For example, if you drive on rough terrain or spend more time off-road than on it, then a set of 275 70r18 or 265 65r18 tires could be just what you need. But which one is right for you?
Both 275 70r18 tires and 26565r18 tires are standard passenger car tire sizes used by manufacturers. We will discuss the pros and cons of each size so that you can make an informed decision about which one is right for you.
275/70r18 vs 265/65r18 Table
275 70r18 | 265 65r18 |
Overall Diameter 33.16 inches | Overall Diameter 31.56 inches |
Width 10.83 inches | Width 10.43 inche |
Sidewall Height 7.58 inches | Sidewall Height 6.78 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 99.16 inches |
Revs Per Mile 608 | Revs Per Mile 638 |
What Does 265 65r18 Tire Mean?
The first number in tire size, 265, refers to the width of the tire in millimeters. The second number, 65, is the aspect ratio and indicates the height of the sidewall as a percentage of the width. The R in this example stands for radial construction, and 18 is the diameter of the wheel in inches.
Overall Diameter
The first thing you need to know when comparing these two sizes is the overall diameter. The overall diameter of a tire is the measurement from one side of the tire to the other, across the center of the tire.
The overall diameter of a 275 70r18 tire is approximately 33.16 inches, while the overall diameter of a 265 65r18 tire is approximately 31.56 inches. This may not seem like a big difference, but it can make a difference in how your vehicle handles.
Section Width
The section width of a tire is the width of the tire from one side to the other, measured at the widest point. The section width of a 275 70r18 tire is approximately 10.83 inches, while the section width of a 265 65r18 tire is approximately 10.43 inches. The difference between those tire sizes is 0.39 inches or about 3.6%.
Circumference
The circumference of a tire is the distance around the outside of the tire. The circumference of a 275 70r18 tire is approximately 104.17 inches, while the circumference of a 265 65r18 tire is approximately 99.16 inches. The difference between those two sizes is about 5.01 inches or about 4.8%.
Revolutions Per Mile
The revolutions per mile (RPM) of a tire is the number of times the tire goes around in a mile. The RPM of a 275 70r18 tire is approximately 608, while the RPM of a 265 65r18 tire is approximately 638. The difference between those two sizes is about 30 RPM or about 5.1%.
Sidewall Height
The sidewall height of a tire is the distance from the edge of the rim to the top of the tread. The sidewall height of a 275 70r18 tire is approximately 7.58 inches, while the sidewall height of a 265 65r18 tire is approximately 6.78 inches. The difference between those two sizes is about 0.80 inches or about 10.5%.
Wheel Size
The wheel size of a tire is the diameter of the wheel that the tire is mounted on. The wheel size of a 275 70r18 tire is 18 inches, while the wheel size of a 265 65r18 tire is also 18 inches. So, there is no difference in wheel size between these two tire sizes.
Construction Type
The construction type of a tire is the way the layers of the tire are put together. The construction type of a 275 70r18 tire is radial, while the construction type of a 265 65r18 tire is also radial. So, there is no difference in construction type between these two tire sizes.
Our Observation
The main difference between 275 70r18 and 265 65r18 tire size is in the section width. The 275 70r18 tire is 0.39 inches or about 3.6% wider than the 265 65r18 tire size. Now that we have looked at the differences between these two tire sizes, it’s time to decide which one is right for you.
Conclusion
The decision of which tire size to choose is up to you and depends on your driving needs. If you need a tire with a smaller overall diameter, then the 265 65r18 tire is the right choice. If you are looking for a tire with a larger section width, then the 275 70r18 tire is the right choice.
I hope this article was helpful in your decision-making process. If you have any questions, please feel free to contact us. We would be happy to help you choose the right tire for your vehicle. Thank you for reading!
Related Article
