Tire Size 275/60r20 vs 275/65r18
Knowing their equivalents are essential if you are considering the 275/60r20 or 275/65r18 tire sizes. The 275/60r20 tire size is equivalent to the 33×10.8r20 tire size, with the same overall diameter of approximately 33 inches.
On the other hand, the 275/65r18 tire size is equivalent to the 32.1×10.8r18 tire size, with the same overall diameter of about 32 inches. Knowing the equivalents of these tire sizes can help you choose the perfect one for your vehicle, ensuring optimal performance and handling.
275/65r18 vs 275/60r20 Table
The difference between the two tire sizes is also provided in both absolute and percentage terms.
| Feature | 275/65r18 | 275/60r20 | Difference |
|---|---|---|---|
| Diameter | 32.07″ | 32.99″ | 0.92 inches |
| Width | 10.83″ | 10.83″ | Same |
| Circum. | 100.77″ | 103.65″ | 2.88 inches |
| Sidewall Height | 7.04″ | 6.5″ | 0.54 inches |
| Revolutions | 628.78 | 611.3 | 17.48 |
Alternative Tire Size For 275/60R20
The table shows various tire sizes, their overall diameter in inches and millimeters, and the percentage difference in overall diameter compared to a reference tire size.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 255/60R20 | 32″ (814 mm) | -2.9% |
| 305/50R20 | 32″ (814 mm) | -2.9% |
| 285/55R20 | 32.4″ (822 mm) | -1.9% |
| 315/50R20 | 32.4″ (824 mm) | -1.7% |
| 265/60R20 | 32.5″ (826 mm) | -1.4% |
| 295/55R20 | 32.8″ (832 mm) | -0.7% |
| 325/50R20 | 32.8″ (834 mm) | -0.5% |
| 305/55R20 | 33.2″ (844 mm) | 0.7% |
| 375/45R20 | 33.3″ (846 mm) | 1% |
| 285/60R20 | 33.5″ (850 mm) | 1.4% |
| 295/60R20 | 33.9″ (862 mm) | 2.9% |
Alternative Tire Size For 275/65R18
The overall diameter of replacement tires must be no more than 3% different from that of the original tire.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 225/75R18 | 31.3″ (795 mm) | -2.5% |
| 285/60R18 | 31.5″ (799 mm) | -2% |
| 265/65R18 | 31.5″ (801 mm) | -1.7% |
| 245/70R18 | 31.5″ (801 mm) | -1.7% |
| 235/75R18 | 31.9″ (809 mm) | -0.7% |
| 255/70R18 | 32.1″ (815 mm) | 0% |
| 305/60R18 | 32.4″ (823 mm) | 1% |
| 285/65R18 | 32.6″ (827 mm) | 1.5% |
| 265/70R18 | 32.6″ (829 mm) | 1.7% |
| 375/50R18 | 32.8″ (833 mm) | 2.2% |
Overall Diameter
The overall diameter of the 275/60R20 tire is 32.99 inches, while the overall diameter of the 275/65R18 tire is 32.07 inches. This means that the 275/60R20 tire is slightly larger and has a higher ground clearance than the 275/65R18 tire. It also means that the 275/65R18 tire has a smaller overall diameter, which may impact its speedometer readings and acceleration.
Tread Width
The tread width of a tire refers to the width of the tread portion that comes into contact with the road surface. In this case, both the 275/60R20 and 275/65R18 tires have the same tread width of 10.83 inches. The tread width is an important factor to consider when selecting tires because it affects the tire’s contact patch with the road, which in turn affects the tire’s grip and handling characteristics.
Rim Diameter
The rim diameter of the 275/60R20 tire is 20 inches, while the rim diameter of the 275/65R18 tire is 18 inches. This means that the 275/60R20 tire is designed to fit larger rims than the 275/65R18 tire. This can impact the aesthetics of the vehicle, as well as its performance and handling.
Sidewall Height
The sidewall height of the 275/60R20 tire is 6.5 inches, while the sidewall height of the 275/65R18 tire is 7.04 inches. This means that the 275/65R18 tire has a taller sidewall, which can provide a smoother ride and better protection against potholes and other road hazards. However, the shorter sidewall of the 275/60R20 tire can provide better handling and stability.
Circumference
The circumference of the 275/60R20 tire is 103.65 inches, while the circumference of the 275/65R18 tire is 100.77 inches. This means that the 275/60R20 tire has a larger circumference, which can provide better fuel efficiency and a smoother ride. However, it can also impact the speedometer readings and acceleration.
Revolutions
The 275/60R20 tire completes 611.3 revolutions per mile, while the 275/65R18 tire completes 628.78 revolutions per mile. This means that the 275/65R18 tire rotates more times per mile than the 275/60R20 tire. This can impact the wear and tear of the tire, as well as its lifespan and fuel efficiency.
Our Observation
In our observation, the 275/60R20 tire is an excellent choice for large trucks and SUVs, as it provides a high ground clearance, great handling, and a sporty look. The wider tread of the tire also provides excellent grip on the road, making it suitable for both on-road and off-road use.
On the other hand, the 275/65R18 tire is a great option for those looking for a smoother ride and better protection against road hazards. The taller sidewall of the tire can absorb more impact, making it more suitable for smaller cars and vehicles that prioritize comfort over performance.
