Tire Size 265/70r17 vs 255/75r17
Choosing the right tire size can be a daunting task, especially if you’re not familiar with the jargon. That’s why we’re here to help you compare two of the most popular tire sizes for SUVs and trucks, the 265/70R17 and the 255/75R17. Both of these tire sizes are designed for off-road use and provide excellent traction on rough terrain, but they differ in several aspects.
265/70r17 vs 255/75r17 Table
By referring to this comparison table, you can gain a better understanding of the distinctions between tire size 265/70R17 and the 255/75R17 tire size.
| Feature | 265/70r17 | 255/75r17 | Difference |
|---|---|---|---|
| Diameter | 31.61 in | 32.06 in | 0.45 (1.4%) |
| Width | 10.43 in | 10.04 in | 0.39 (3.8%) |
| Circum. | 99.29 in | 100.72 in | 1.42 (1.4%) |
| Sidewall Height | 7.3 in | 7.53 in | 0.23 (3.1%) |
| Revolutions | 638.1 | 629.09 | 9.01 (1.4%) |
Alternative Tire Size of 265/70r17
It’s necessary for replacement tires to have an overall diameter within a 3% range of the original tires.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 235/75R17 | 30.9″ (784 mm) | -2.5% |
| 255/70R17 | 31.1″ (790 mm) | -1.7% |
| 275/65R17 | 31.1″ (790 mm) | -1.7% |
| 305/60R17 | 31.4″ (798 mm) | -0.7% |
| 245/75R17 | 31.5″ (800 mm) | -0.5% |
| 285/65R17 | 31.6″ (802 mm) | -0.2% |
| 235/80R17 | 31.8″ (808 mm) | 0.5% |
| 345/55R17 | 32.0″ (812 mm) | 1.0% |
| 255/75R17 | 32.0″ (814 mm) | 1.2% |
| 275/70R17 | 32.2″ (818 mm) | 1.7% |
| 305/65R17 | 32.6″ (828 mm) | 3.0% |
Alternative Tire Size of 265/70r17
When replacing tires, the overall diameter of the new ones should not differ from the original tires by more than 3%.
| 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) | -2.0% |
| 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 | 32.0″ (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 first thing to consider is the tire’s overall diameter. The 265/70R17 has an overall diameter of 31.6 inches, while the 255/75R17 has an overall diameter of 32.1 inches. This means that the 255/75R17 is slightly larger than the 265/70R17, which can affect the speedometer reading and the vehicle’s clearance.
Tread Width
The next factor to consider is the tread width. The 265/70R17 has a tread width of 10.43 inches, while the 255/75R17 has a tread width of 10.04 inches. The wider tread of the 265/70R17 provides better stability and handling on both wet and dry surfaces.
Rim Diameter
The rim diameter of both tires is 17 inches, which means they can fit on the same wheel. However, ensuring a proper fit would be best if you confirmed that the rim size matches the tire’s diameter.
Sidewall Height
The tire’s sidewall height affects the vehicle’s stability and handling. The 265/70R17 has a sidewall height of 7.3 inches, while the 255/75R17 has a sidewall height of 7.53 inches. This means the 265/70R17 has a taller sidewall, providing better cushioning and protection against impacts.
Circumference
The circumference of the tire affects how many times the tire rotates in one mile. The 265/70R17 has a circumference of 99.29 inches, while the 255/75R17 has a circumference of 100.8 inches. This means that the 255/75R17 covers a slightly larger distance with each rotation, which can affect the vehicle’s fuel efficiency.
Revolutions
The revolutions per mile of the tire affect the speedometer reading and the vehicle’s performance. The 265/70R17 has revolutions per mile of 638, while the 255/75R17 has revolutions per mile of 629. This means that the 265/70R17 rotates more times per mile, affecting the accuracy of the speedometer and the vehicle’s handling.
Our Observation
After analyzing both tire sizes, we’ve concluded that the 265/70R17 is better suited for off-road use due to its wider tread, taller sidewall, and increased revolutions per mile. However, if you’re looking for a tire that covers more distance with each rotation and provides better fuel efficiency, then the 255/75R17 is the better option for you.
In conclusion, choosing the right tire size for your vehicle depends on several factors, including the vehicle’s make and model, the driving you’ll be doing, and your personal preferences. This comparison between the 265/70R17 and the 255/75R17 has helped you decide and find the right tire for your needs.
