Tire Size 295/55r20 vs 305/55r20

Do you go with a smaller size or a bigger size? What brand should you choose? And what about the type of tire? Should you get all-season tires or performance tires? We will compare two tire sizes, 295/55R20 and 305/55R20, to help you understand the differences and their effects on your vehicle’s performance.

295/55r20 vs 305/55r20 Table

Consulting this comparison table can provide you with a clearer comprehension of the distinctions between the tire dimensions of 295/55r20 and 305/55r20.

Feature 295/55-20 305/55-20 Difference
Diameter inches 32.78″ 33.21″ 0.43 inch
Width inches 11.61″ 12.01″ 0.39 inch
Circum. inches 102.97″ 104.33″ 1.36 inch
Sidewall Height 6.39″ 6.6″ 0.22 inch
Revolutions 615.34 607.31 8.02 

Alternative Tire Size for 295/55r20
There are multiple options available if you are seeking alternative tire sizes to replace 295/55r20, and you can use a chart to compare them.

Tire Size Overall Diameter Difference
275/55R20 31.9″ (810 mm) -2.6%
255/60R20 32″ (814 mm) -2.2%
305/50R20 32″ (814 mm) -2.2%
285/55R20 32.4″ (822 mm) -1.2%
315/50R20 32.4″ (824 mm) -1%
265/60R20 32.5″ (826 mm) -0.7%
325/50R20 32.8″ (834 mm) 0.2%
275/60R20 33″ (838 mm) 0.7%
305/55R20 33.2″ (844 mm) 1.4%
375/45R20 33.3″ (846 mm) 1.7%
285/60R20 33.5″ (850 mm) 2.2%

Alternative Tire Size for 305/55r20
There are multiple alternative tire sizes available to replace 305/55r20, and you can use a table chart to compare and select the appropriate one.

Tire Size Overall Diameter Difference
285/55R20 32.4″ (822 mm) -2.6%
315/50R20 32.4″ (824 mm) -2.4%
265/60R20 32.5″ (826 mm) -2.1%
295/55R20 32.8″ (832 mm) -1.4%
325/50R20 32.8″ (834 mm) -1.2%
275/60R20 33″ (838 mm) -0.7%
375/45R20 33.3″ (846 mm) 0.2%
285/60R20 33.5″ (850 mm) 0.7%
295/60R20 33.9″ (862 mm) 2.1%
355/50R20 34″ (864 mm) 2.4%
275/65R20 34.1″ (866 mm) 2.6%

Overall Diameter
The 295/55R20 tire has an overall diameter of 32.78 inches (832.5 mm), while the 305/55R20 tire measures 33.21 inches (843.5 mm). A difference of 0.43 inches (11 mm) or 1.3% means that the 305/55R20 tire is slightly larger than the 295/55R20 tire.

This larger diameter can give more ground clearance and improved off-road capabilities. However, it may also cause more rolling resistance, negatively affecting fuel efficiency.

Aspect Ratio
As we mentioned before, the aspect ratio is the second number on the sidewall. It measures how tall the sidewall is about the width of the tire. The higher the aspect ratio, the taller the sidewall. The aspect ratio of the 295 55r20 is 55, and the aspect ratio of 305 55r20 is also 55. This means that the height of the tire is 55% of the width.

So, the Aspect Ratio of 295 55r20 is 55% which is 162.25 millimeters, and the Aspect Ratio of 305 55r20 is 55% which is 167.75 millimeters. The difference in aspect ratio between the about 5 millimeters. It’s important to note that the width and aspect ratio can affect the tire’s diameter.

Section Width
The 295/55R20 tire has a section width of 11.61 inches (295 mm), while the 305/55R20 tire measures 12.01 inches (305 mm). This difference of 0.39 inches (10 mm) or 3.4% reveals that the 305/55R20 tire is wider.

A wider tire can improve traction, stability, and handling on wet or slick surfaces. However, it can also boost rolling resistance and reduce fuel efficiency.

Therefore, if you’re looking for better handling and stability, a wider tire like the 305/55R20 is an excellent option. Remember that it could decrease your fuel efficiency in the long run.

The 295/55R20 tire has a circumference of 102.97 inches (2615.38 mm), while its 305/55R20 counterpart has a circumference of 104.33 inches (2649.93 mm). This difference of 1.36 inches (34.56 mm) or 1.3% means that the 305/55R20 tire has a larger circumference.

A bigger circumference can give you a smoother ride, but it may come at the cost of accelerating power and fuel efficiency due to the increased contact patch.

Revolutions per Mile
The 295/55R20 tire has 615.34 revolutions per mile (382.35 revolutions per km), whereas the 305/55R20 tire has 607.31 revolutions per mile (377.37 revolutions per km).

The difference of -8.02 revolutions per mile (-4.99 revolutions per km) or -1.3% indicates that the larger 305/55R20 tire takes fewer revolutions to cover the same distance. This can impact the accuracy of your speedometer and odometer readings.

Sidewall Height
The 295/55R20 tire has a sidewall height of 6.39 inches (162.25 mm), whereas the 305/55R20 has a higher sidewall measuring 6.6 inches (167.75 mm). That difference is 0.22 inches (5.5 mm) or 3.4%.

This means that the 305/55R20 tire has a higher sidewall. The extra height can provide a more comfortable ride by effectively dampening road imperfections. However, it may reduce steering response and cornering performance.

Our Observation
When choosing between these two tire sizes, it is essential to consider your driving preferences and the specific requirements of your vehicle. The 305/55R20 tire may be more suitable for those who prioritize off-road performance, traction, and ride comfort.

On the other hand, the 295/55R20 tire could be a better choice for those who prefer better fuel efficiency and more responsive handling. It is crucial to consult your vehicle’s owner’s manual or a tire specialist to ensure that your tire size is compatible with your vehicle’s specifications and performance capabilities.

Additionally, keep in mind that changing your tire size can impact your speedometer and odometer readings, so make sure to account for these changes if necessary.

What Does 295 55r20 Tire Mean?

The 295 55r20 tire size is a common choice for many vehicles. This size tire is meant for light trucks and SUVs. They offer a good balance of traction, comfort, and durability. The first number is the width of the tire in millimeters. In this example, it is 295 millimeters.

The second number is known as the aspect ratio. This measures how tall the sidewall is about the width. The aspect ratio is 55, which means that the tire’s sidewall height is 55 percent of its width. The third letter on the sidewall is the tire construction. The most common construction is “R,” which stands for radial. The fourth and fifth numbers are the wheel diameter in inches. In this case, it is 20 inches.

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