Tire Size 245/65r17 vs 265/70r17

Tire size is an essential factor when purchasing a new set of tires. But what’s the difference between 245 65r17 and 265 70r17 tires? And which size is right for you? This blog post will take a closer look at the differences between these two tire sizes and help you decide which is best for your needs.

245 65r17 vs 265 70r17 Table

This comparison table will help you see the main differences between these two tire sizes.

Feature 245/65r17 265/70r17
Diameter 29.54 in 31.61 in 2.07 in 
Width 9.65 in 10.43 in 0.79 in 
Circumference 92.8 in  99.29 in 6.49 in 
Sidewall Height 6.27 in  7.3 in  1.03 in
Revolutions/mi 682.75  638.1 -44.65

Alternative Tire Size for 245/65r17
Various options for tire sizes can substitute 275/65R20, but it’s important to note that the replacement tire should have an overall diameter within 3% of the original tire’s diameter.

Tire Size Overall Diameter Difference
165/90R17 28.7″ (730 mm) -2.7%
275/55R17 28.9″ (734 mm) -2.1%
215/70R17 28.9″ (734 mm) -2.1%
255/60R17 29.1″ (738 mm) -1.6%
235/65R17 29.1″ (738 mm) -1.6%
225/70R17 29.4″ (748 mm) -0.3%
175/90R17 29.4″ (748 mm) -0.3%
265/60R17 29.5″ (750 mm) 0%
235/70R17 30″ (762 mm) 1.6%
275/60R17 30″ (762 mm) 1.6%
255/65R17 30.1″ (764 mm) 1.9%
225/75R17 30.3″ (770 mm) 2.7%

Alternative Tire Size for 265/70r17
There are several choices for tire sizes to replace 275/65R20, but it’s crucial to ensure that the replacement tire has an overall diameter that is no more than 3% different from the original tire’s diameter.

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″ (812 mm) 1%
255/75R17 32″ (814 mm) 1.2%
275/70R17 32.2″ (818 mm) 1.7%
305/65R17 32.6″ (828 mm) 3%

Overall Diameter
You will first notice that the 265 70r17 tires are a bit larger than the 245 65r17. This difference in size can have an impact on a few different things. First, the larger tires can grip the road better and provide more traction.

This can be especially helpful in off-road driving or inclement weather. The larger tires will also make your vehicle look more aggressive and give it a better stance. The overall diameter of the 245 65r17 tire size is 29.54 inches, and 31.61 inches is the diameter of the 265 70r17 tire size.

Section Width
The section width measures the tire width from sidewall to sidewall. The 245 65r17 has a section width of 245 mm, while the 265 70r17 has a section width of 265 mm.

The difference between 245 65r17 and 265 70r17 tire sizes is 0.79 inches or about 8.2%. The wider the section width, the larger the contact patch will be. This can affect the tire’s traction and grip and how it wears down over time.

Circumference
The circumference of a tire is the distance around the outside of the tire. The 245 65r17 has a circumference of 92.8 inches, while the 265 70r17 has a circumference of 99.29 inches.

The difference in the 245 65r17 and 265 70r17 tire sizes is about 6.49 inches or about 7%. The larger the circumference, the more distance the tire will cover with each revolution.

Revolutions Per Mile
The revolutions per mile are how many times the tire will go around in one mile. The 245 65r17 has revolutions per mile of 682, while the 265 70r17 has revolutions per mile of 638.

The difference in the 245 65r17 and 265 70r17 tire sizes is about 6.5%. This difference is so tiny that it should not have any real-world effect.

Sidewall Height
The sidewall height is the distance from the rim’s edge to the tire’s tread. The 265 70r17 has a sidewall height of 7.3 inches, while the 245 65r17 has a sidewall height of 6.27 inches.

This difference in sidewall height is about 1.03 inches or about 16.5%. The larger the sidewall height, the more comfortable the ride will be, and the better the tire will absorb road irregularities.

Wheel Size
Rim size is the diameter of the wheel that the tire is mounted on. The 245 65r17 can be mounted on a 17-inch wheel, while the 265 70r17 needs a 17-inch wheel. The difference between the 245 65r17 and 265 70r17 tire sizes is about 0 inches.

Construction Type
The construction type of a tire is how the plies are arranged inside the tire. The 245 65r17 has radial construction, while the 265 70r17 has radial construction.

Radial tires are more common because they handle better, last longer, and are more fuel-efficient. Bias tires are less common but are often used on off-road vehicles because they are more durable.

Our Observation
The 245 65r17 is a good choice for most passenger vehicles. The 265 70r17 is a good choice for trucks, SUVs, and off-road vehicles. The larger size of the 265 70r17 will provide more traction and a more aggressive look but may sacrifice some fuel efficiency.

The smaller size of the 245 65r17 will give a more comfortable ride and better fuel efficiency. Still, it may not perform as well in off-road conditions.

Conclusion
The main difference between 245 65r17 and 265 70r17 tire sizes is the sidewall height. The sidewall height of the 265 70r17 tire size is 1.03 inches or about 16.5% taller than the 245 65r17 tire size. This has helped you decide which tire size is best for you! If you have any further questions, please feel free to contact us. Thank you for reading!

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