Differences between 255/70 and 265/70 Tires

When it comes to buying tires, there are a lot of different options available. Two common sizes are 255/70 and 265/70. While they may seem similar, there are some key differences between them that can impact your vehicle’s performance. In this article, we will take a closer look at the differences between these two tire sizes, including their specifications and how they can affect your driving experience.

Specifications Table:

Specification 255/70 265/70
Width (mm) 255 265
Aspect Ratio (%) 70 70
Rim Diameter (in) 16 16
Load Index 111 112
Speed Rating S S
Overall Diameter (in) 30.1 30.6


Main Differences between 255/70 and 265/70 Tires


The first and most obvious difference between these two tire sizes is their width. The 255/70 tire is 255 millimeters wide, while the 265/70 tire is 265 millimeters wide. This means that the 265/70 tire is slightly wider than the 255/70 tire.

Aspect Ratio:

The aspect ratio of a tire is the height of the sidewall expressed as a percentage of the tire’s width. In the case of these two tire sizes, both have an aspect ratio of 70, meaning the height of the sidewall is 70% of the tire’s width.

Rim Diameter:

Both the 255/70 and the 265/70 tires have a rim diameter of 16 inches, which means they can fit on the same size rim.

Load Index and Speed Rating:

The load index and speed rating of a tire indicate the maximum load it can carry and the maximum speed it can safely travel at. In this case, the 265/70 tire has a slightly higher load index of 112 compared to the 111 load index of the 255/70 tire. However, both have the same speed rating of S, which means they can safely travel at speeds up to 112 mph.

Overall Diameter:

The overall diameter of a tire is the distance from the top of the tire to the bottom, including the sidewalls. The 265/70 tire has a slightly larger overall diameter of 30.6 inches compared to the 30.1 inches of the 255/70 tire.


While the differences between the 255/70 and 265/70 tire sizes may seem small, they can have an impact on your vehicle’s performance. The wider 265/70 tire can provide slightly better traction and handling, but may also result in a slightly rougher ride. The higher load index of the 265/70 tire can also be beneficial if you regularly carry heavy loads or tow trailers. Ultimately, the best tire size for your vehicle will depend on your specific needs and preferences.

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