Tire Size 265/70r17 vs 275/65r18

The question of which tire size is better, 275/65r18 or 265/70r17, can be a source of frustration and confusion. The tire size 265/65R18 can also be expressed as 31.61×10.4R18, while the tire size 275/65R18 is equivalent to 32.07×10.8R18.

It’s like two paths diverging in the woods; you don’t know which one to take. So, buckle up because we’re about to take an exhilarating ride into the world of tire size comparisons!

275/65r18 vs 265/70r17 Table

Get a clearer picture of the disparities between tire size 275/65R18 and tire size 265/70r17 with the help of this informative comparison table.

Diameter32.07″31.61″0.47 inches
Width10.83″10.43″0.39 inches
Circum.100.77″99.29″1.47 inches
Sidewall Height7.04″7.3″0.27 inches

Tire Size Alternative 275/65R18
The first column lists the tire size, with the numbers indicating the width of the tire within range of 3%.

Tire SizeOverall DiameterDifference
225/75R1831.3″ (795 mm)-2.5%
285/60R1831.5″ (799 mm)-2%
265/65R1831.5″ (801 mm)-1.7%
245/70R1831.5″ (801 mm)-1.7%
235/75R1831.9″ (809 mm)-0.7%
255/70R1832.1″ (815 mm)0%
305/60R1832.4″ (823 mm)1%
285/65R1832.6″ (827 mm)1.5%
265/70R1832.6″ (829 mm)1.7%
375/50R1832.8″ (833 mm)2.2%

Alternative Tire Size 265/70R17
The overall diameter of replacement tires must be within a 3% range of the original tire’s diameter.

Tire SizeOverall DiameterDifference
235/75R1730.9″ (784 mm)-2.5%
255/70R1731.1″ (790 mm)-1.7%
275/65R1731.1″ (790 mm)-1.7%
305/60R1731.4″ (798 mm)-0.7%
245/75R1731.5″ (800 mm)-0.5%
285/65R1731.6″ (802 mm)-0.2%
235/80R1731.8″ (808 mm)0.5%
345/55R1732.0″ (812 mm)1.0%
255/75R1732.0″ (814 mm)1.2%
275/70R1732.2″ (818 mm)1.7%
305/65R1732.6″ (828 mm)3.0%

Overall Diameter
One of the most critical factors in choosing the right tire size is the overall diameter. The 265/70r17 tire has an overall diameter of 31.61 inches, while the 275/65r18 tire has an overall diameter of 32.07 inches. The larger overall diameter of the 275/65r18 tire offers several benefits, including better ground clearance, improved off-road performance, and a smoother ride on bumpy roads.

Tread Width
The tread width of a tire is another crucial factor to consider when selecting a tire size. The 275/65r18 tire has a wider tread than the 265/70r17 tire. The wider tread provides better handling and improved stability, especially when driving at high speeds. Additionally, the wider tread of the 275/65r18 tire offers better traction on wet and slippery roads.

Rim Diameter
The rim diameter of a tire is the measurement of the rim’s diameter, which the tire is designed to fit. The 265/70r17 tire is designed to fit a 17-inch rim, while the 275/65r18 tire is designed to fit an 18-inch rim. When selecting a tire size, it is essential to ensure that it fits your vehicle’s rim diameter. If the tire size is not compatible with the rim diameter, it can cause handling and stability issues.

Sidewall Height
The sidewall height of a tire is the distance from the rim to the tread. The 265/70r17 tire has a sidewall height of 7.3 inches, while the 275/65r18 tire has a sidewall height of 7.04 inches. The lower sidewall height of the 275/65r18 tire offers better handling and improved stability.

The circumference of a tire is the distance around the tire. The 275/65r18 tire has a larger circumference than the 265/70r17 tire, which means that it covers more ground with each revolution. This larger circumference can result in better fuel efficiency and a smoother ride on highways.

The number of revolutions a tire makes per mile is another crucial factor to consider. The 275/65r18 tire makes fewer revolutions per mile than the 265/70r17 tire. This means that the 275/65r18 tire will provide a smoother ride and better fuel efficiency on highways.

Our Observation
After comparing the two tire sizes, we can conclude that the 275/65r18 tire offers several benefits over the 265/70r17 tire. The larger overall diameter, wider tread, and larger circumference of the 275/65r18 tire provide improved performance, stability, fuel efficiency, and a smoother ride on highways.

However, it is essential to ensure that the tire size you choose is compatible with your vehicle’s rim diameter and provides similar performance characteristics. Additionally, drivers who frequently drive off-road may find the 265/70r17 tire more suitable due to its higher sidewall height, which provides better protection against punctures and damages from rough terrain.

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