275 65r18 vs 275 70r18 Tire Size
There’s no doubt that even the littlest things can make a huge difference. Finding the right set of tires for your truck is one of those things that may not seem like such a big deal at first glance, but in reality goes far beyond just looks. The correct set of tires can have a massive impact on how well your truck handles different terrain and various road conditions.
In this blog post, we’ll be taking an in-depth look at the differences between 275 65r18 and 275 70r18 tire size. These two options are among the most popular when it comes to different sizes and styles of tires, so they’re worth exploring if you’re trying to find the perfect set for your next adventure with your truck. Let’s get started!
275/65r18 vs 275/70r18 Table
275 70r18 | 275 65r18 |
Overall Diameter 33.16 inches | Overall Diameter 32.07 inches |
Width 10.83 inches | Width 10.83 inche |
Sidewall Height 7.58 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 104.17 inches | Circumference 100.77 inches |
Revs Per Mile 608 | Revs Per Mile 628 |
What Does 275 65r18 Tire Mean?
The first number in a tire size refers to the width of the tire in millimeters. The second number is the aspect ratio, which is the height of the tire sidewall as a percentage of the width. The third letter is the construction type, and the last number is the wheel diameter in inches.
So, a 275 65r18 tire would be 275 mm wide, with a sidewall that is 65% of the tire’s width, and it would fit on an 18-inch diameter wheel. Now that we know how to read tire size let’s examine the pros and cons of each size.
Overall Diameter
One of the main things you need to consider when choosing a tire size is the overall diameter of the tire. The 275 70r18 tires have a diameter of 33.16 inches, while the 275 65r18 tires have a diameter of 32.07 inches. This may not seem like a big difference, but it can make a big difference in how your vehicle handles.
If you choose tires that are too small, they may not make good contact with the road, leading to a loss of traction. Tires that are too big can also cause problems. They may rub against the body of your vehicle or throw off your speedometer readings.
Section Width
The section width of a tire is the width of the tire from sidewall to sidewall. The 275 70r18 tires have a section width of 10.83 inches, while the 275 65r18 tires have a section width of just 10.83 inches. So there is no difference between them.
A wider tire will provide better traction, but it can also make your vehicle more difficult to handle. Wider tires are also more likely to suffer from tire rollover, which can be dangerous.
Circumference
The circumference of a tire is the distance around the outside of the tire. The 275 70r18 tires have a circumference of 104.17 inches, while the 275 65r18 tires have a circumference of 100.77 inches. This difference in circumference can cause your speedometer to be off by about 3.4%.
You should also be aware that a change in circumference can affect the gearing of your vehicle. If you install larger tires, your vehicle must work harder to turn them. This can lead to decreased fuel economy.
Revolutions Per Mile
The number of revolutions per mile (RPM) measures how far the tire will travel in one revolution. The 275 70r18 tires have an RPM of 608, while the 275 65r18 tires have an RPM of 628. This difference is due to the difference in circumference between the two sizes, which is 20 RPM or about 3.3%.
A higher RPM means your engine will have to work harder to turn the tires. This can lead to decreased fuel economy. It can also cause your engine to overwork, which can lead to increased wear and tear.
Sidewall Height
The sidewall height of a tire is the distance from the edge of the wheel to the top of the tire. The 275 70r18 tires have a sidewall height of 7.58 inches, while the 275 65r18 tires have a sidewall height of 7.04 inches. This difference can affect the way your vehicle handles.
A taller sidewall will provide better cushioning and a smoother ride, but it can also make your vehicle more difficult to handle. A shorter sidewall can provide better handling but can also lead to a harsher ride.
Wheel Size
The wheel size is the diameter of the wheel that the tire is mounted on. The 275 70r18 tires are designed for 18-inch wheels, while the 275 65r18 tires are designed for 18-inch wheels. So there is no difference between them.
Construction Type
The construction type of a tire is the way the layers of the tire are put together. The 275 70r18 tires have a radial construction, while the 275 65r18 tires also have a radial structure. Radial tires are made with the layers of the tire running perpendicular to the centerline of the tire. This construction provides good tread life, handling, and fuel economy.
Our Observation
The main difference between 275 65r18 and 275 70r18 tire size is in the sidewall height. The 275 70r18 tire size is 0.54 inches or about 7.7% taller than the 275 65r18 tire size. This difference can affect the way your vehicle handles. A taller sidewall will provide better cushioning and a smoother ride, but it can also make your vehicle more difficult to handle.
Conclusion
If you are thinking about replacing your tires, it is important to consider all of the factors that can affect your decision. The size of the tire, the construction type, and the wheel size are all important factors to consider.
I hope this article has helped you to understand the differences between 275 65r18 and 275 70r18 tires. If you have any questions, please feel free to leave a comment below. Thanks for reading!
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