Tire Size 255/75r17 vs 275/70r17
The 255/75r17 and 275/70r17 tire sizes are both popular among truck and SUV drivers. Comparing these two tire sizes can help you identify the differences and select the one that best suits your vehicle and driving style. Let’s take a closer look at the features of these two tire sizes.
255/75r17 vs 275/70r17 Table
So without further ado, let’s take a closer look at the 255/75r17 vs 275/70r17 comparison table.
| Feature | 255/75r17 | 275/70r17 | Difference |
|---|---|---|---|
| Diameter | 32.06″ | 32.16″ | 0.1 inches |
| Width | 10.04″ | 10.83″ | 0.79 inches |
| Circum. | 100.72″ | 101.03″ | 0.31 inches |
| Sidewall Height | 7.53″ | 7.58″ | 0.05 inches |
| Revolutions | 629.09 | 627.17 | 1.93 |
Alternative Tire Size For 275/70r17
It is recommended that when replacing tires on a vehicle, the overall diameter of the new tires should not differ by more than 3% from the diameter of the original tires.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 305/60R17 | 31.4″ (798 mm) | -2.4% |
| 245/75R17 | 31.5″ (800 mm) | -2.2% |
| 285/65R17 | 31.6″ (802 mm) | -2% |
| 265/70R17 | 31.7″ (804 mm) | -1.7% |
| 235/80R17 | 31.8″ (808 mm) | -1.2% |
| 345/55R17 | 32″ (812 mm) | -0.7% |
| 255/75R17 | 32″ (814 mm) | -0.5% |
| 305/65R17 | 32.6″ (828 mm) | 1.2% |
| 285/70R17 | 32.8″ (832 mm) | 1.7% |
| 235/85R17 | 32.8″ (832 mm) | 1.7% |
| 255/80R17 | 33.1″ (840 mm) | 2.7% |
Alternative Tire Size For 255/75r17
It is essential to ensure that the new tires’ overall diameter is within 3% of the original tire’s diameter.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 275/65R17 | 31.1″ (790 mm) | -2.9% |
| 255/70R17 | 31.1″ (790 mm) | -2.9% |
| 305/60R17 | 31.4″ (798 mm) | -2% |
| 245/75R17 | 31.5″ (800 mm) | -1.7% |
| 285/65R17 | 31.6″ (802 mm) | -1.5% |
| 265/70R17 | 31.7″ (804 mm) | -1.2% |
| 235/80R17 | 31.8″ (808 mm) | -0.7% |
| 345/55R17 | 32″ (812 mm) | -0.2% |
| 275/70R17 | 32.2″ (818 mm) | 0.5% |
| 305/65R17 | 32.6″ (828 mm) | 1.7% |
| 235/85R17 | 32.8″ (832 mm) | 2.2% |
| 285/70R17 | 32.8″ (832 mm) | 2.2% |
Overall Diameter
The overall diameter of a tire plays a crucial role in determining its fitment and performance. The overall diameter of a 255/75r17 tire is 32.06 inches, whereas a 275/70r17 tire has an overall diameter of 32.16 inches. This means that the 275/70r17 tire is slightly larger in diameter than the 255/75r17 tire.
Aspect Ratio
A tire’s aspect ratio is the ratio of its sidewall height to its section width. The 255/75r17 tire has an aspect ratio of 75, meaning that the sidewall height is 75% of the tire’s section width. On the other hand, the 275/70r17 tire has an aspect ratio of 70, indicating that the sidewall height is 70% of the tire’s section width. This means the 255/75r17 tire has a taller sidewall than the 275/70r17 tire.
Tread Width
The tread width of a tire is the width of the section that comes into contact with the road. The 255/75r17 tire has a tread width of 10.04 inches, while the 275/70r17 tire has a tread width of 10.83 inches. This means the 275/70r17 tire has a wider tread than the 255/75r17 tire.
Rim Diameter
The rim diameter is the diameter of the wheel on which the tire is mounted. The 255/75r17 and 275/70r17 tires have a rim diameter of 17 inches. This means these two tire sizes are compatible with the same wheel size.
Sidewall Height
As mentioned earlier, the 255/75r17 tire has a taller sidewall than the 275/70r17 tire. The sidewall height of the 255/75r17 tire is 7.53 inches, whereas the sidewall height of the 275/70r17 tire is 7.58 inches. This means the 275/70r17 tire has a slightly higher sidewall than the 255/75r17 tire.
Circumference
The circumference of a tire is the distance around its outer perimeter. The circumference of a 255/75r17 tire is 100.72 inches, while the circumference of a 275/70r17 tire is 101.03 inches. This means the 275/70r17 tire covers slightly more distance in one revolution than the 255/75r17 tire.
Revolutions
The number of revolutions a tire makes per mile is an important factor to consider, as it affects the vehicle’s speedometer calibration and fuel efficiency. The 255/75r17 tire makes 629.09 revolutions per mile, while the 275/70r17 tire makes 627.17 revolutions per mile. This means that the 275/70r17 tire has a slower revolution speed than the 255/75r17 tire.
Our Observation
After analyzing the various features of the two tire sizes, it is clear that both the 255/75r17 and 275/70r17 tire sizes have their own strengths and weaknesses. The 255/75r17 tire has a taller sidewall, making it more suitable for off-roading and providing a smoother ride. On the other hand, the 275/70r17 tire has a wider tread, providing better stability and handling on the road.
It is important to note that the differences between the two tire sizes are relatively minor and may not be noticeable to the average driver. The selection between the two tire sizes ultimately depends on your individual preferences and driving needs. If you plan to go off-roading frequently, the 255/75r17 tire may be a better option, while the 275/70r17 tire may be a better choice for daily driving and highway use.
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