Tire Size 255/70r15 vs 275/60r15
As a car owner, it’s important to understand the numbers and letters on your tire’s sidewall. Two popular tire sizes that many car owners are faced with choosing between are the 255/70r15 and the 275/60r15.
Both sizes are suitable for a range of vehicles, but there are differences that should be considered when making a decision. We’ll compare the two sizes based on overall diameter, tread width, rim diameter, sidewall height, circumference, revolutions, alternative sizes, and our observations.
255/70r15 vs 275/60r15 Table
Use this comparison table to grasp the dissimilarities between 255/70r15 and the 275/60r15 tire sizes.
| Feature | 255/70r15 | 275/60r15 | Difference |
|---|---|---|---|
| Diameter | 29.06″ | 27.99″ | 1.06 in (-3.7%) |
| Width | 10.04″ | 10.83″ | 0.79 in (7.8%) |
| Circumference | 91.28″ | 87.94″ | 3.34 in (3.7%) |
| Sidewall Height | 7.03″ | 6.5″ | 0.53 in (-7.6%) |
| Revolutions | 694.13 | 720.49 | 26.36 (3.8%) |
Alternative tire size For 255/70r15
To ensure proper fit and function, replacement tires must be of a diameter that is within 3% of the overall diameter of the original tire.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 225/75R15 | 28.3″ (719 mm) | -2.7% |
| 245/70R15 | 28.5″ (725 mm) | -1.9% |
| 215/80R15 | 28.5″ (725 mm) | -1.9% |
| 235/75R15 | 28.9″ (733 mm) | -0.8% |
| 295/60R15 | 28.9″ (735 mm) | -0.5% |
| 225/80R15 | 29.2″ (741 mm) | 0.3% |
| 215/85R15 | 29.4″ (747 mm) | 1.1% |
| 245/75R15 | 29.5″ (749 mm) | 1.4% |
| 205/90R15 | 29.6″ (751 mm) | 1.6% |
| 265/70R15 | 29.6″ (753 mm) | 1.9% |
| 235/80R15 | 29.8″ (757 mm) | 2.4% |
| 315/60R15 | 29.9″ (759 mm) | 2.7% |
| 345/55R15 | 30″ (761 mm) | 3% |
Alternative tire size of 275/60r15
When selecting replacement tires, it is important to choose ones whose overall diameter is within 3% of that of the original tires.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 195/80R15 | 27.3″ (693 mm) | -2.5% |
| 225/70R15 | 27.4″ (697 mm) | -2% |
| 265/60R15 | 27.5″ (699 mm) | -1.7% |
| 245/65R15 | 27.5″ (699 mm) | -1.7% |
| 215/75R15 | 27.7″ (703 mm) | -1.1% |
| 295/55R15 | 27.8″ (705 mm) | -0.8% |
| 325/50R15 | 27.8″ (707 mm) | -0.6% |
| 235/70R15 | 28.0″ (711 mm) | 0% |
| 255/65R15 | 28.1″ (713 mm) | 0.3% |
| 225/75R15 | 28.3″ (719 mm) | 1.1% |
| 215/80R15 | 28.5″ (725 mm) | 2% |
| 245/70R15 | 28.5″ (725 mm) | 2% |
Overall Diameter
When it comes to the overall diameter of the tire, the 255/70r15 is taller at 29.06 inches, while the 275/60r15 has an overall diameter of 27.99 inches. The difference of almost two inches means that the 255/70r15 has a higher ground clearance than the 275/60r15.
Tread Width
In terms of tread width, the 275/60r15 has a wider tread of 10.83 inches, while the 255/70r15 has a tread width of 10.04 inches. This difference in tread width may result in the 275/60r15 having better handling and stability on the road.
Rim Diameter
The rim diameter for both tire sizes is 15 inches, so there’s no difference there.
Sidewall Height
The 255/70r15 has a taller sidewall height of 7.03 inches, while the 275/60r15 has a shorter sidewall height of 6.5 inches. A taller sidewall height generally means more cushion and a smoother ride, while a shorter sidewall height may result in better handling and responsiveness.
Circumference
The circumference of the 255/70r15 is 91.28 inches, while the 275/60r15 has a circumference of 87.94 inches. A larger circumference means that the tire covers more ground per revolution and results in more wear on the tire.
Revolutions
The 255/70r15 has 694.13 revolutions per mile, while the 275/60r15 has 720.49 revolutions per mile. This difference in revolutions means that the 275/60r15 may have better fuel efficiency and acceleration than the 255/70r15.
Our Observation
After analyzing the data, it’s clear that both tire sizes have their advantages and disadvantages. The 255/70r15 has a taller overall diameter and sidewall height, which may result in a smoother ride and more ground clearance.
The 275/60r15, on the other hand, has a wider tread and shorter sidewall height, which may result in better handling and responsiveness on the road. Ultimately, the choice between the two sizes will depend on the needs and preferences of the car owner.
In conclusion, understanding tire sizes and numbers is crucial for car owners, and the 255/70r15 and 275/60r15 are both popular sizes that many car owners have to choose between. By comparing the two sizes based on overall diameter, tread width, rim diameter, sidewall height, circumference, revolutions, alternative sizes, and our observations, car owners can make a more informed decision about which size is right for their vehicle.
Meet Caitlin McCormack, a Tire Size Expert and Blogger Passionate About Everything Related to Tires. With Years of Experience in the Tire Industry, Caitlin Has Become an Expert in Tire Sizes and Their Impact on Vehicle Performance.