What Does 90/80 Tire Size Mean on a Tire?

The 90/80 tire size on a tire means that the motorcycle tire is 80mm wide, the height of the sidewall is 90% of the tire’s width (or 72mm), and the diameter of the rim is 17 inches.

The numbers on a motorcycle or bicycle tire indicate the tire’s width, height, and rim size. The first number represents the width of the tire in millimeters.

The second number represents the height of the tire’s sidewall, measured as a percentage of the tire’s width.

For example, a motorcycle tire with a size of 90/80 means that the tire is 80mm wide and the height of the sidewall is 90% of the tire’s width, or 72mm. The third number represents the diameter of the rim in inches.

It is important to note that there are two types of numerical readings on motorcycle tires: the inch scale and the metric scale.

The inch scale is often found on old and small motorcycles, while the metric scale is used on newer motorcycles and provides more detailed information about the tire.

The metric scale indicates the width of the tire in millimeters, the height of the sidewall as a percentage of the tire’s width, and the size of the rim in inches.

Which is wider, 90 80 or 80 90?

The width of a tire is usually represented by the first number in the tire size, so the wider tire is the one with, the larger first number. Therefore, the tire size 90 80 is wider than 80 90.

Note that the first number in a tire size represents the width of the tire in millimeters. The second number represents the aspect ratio, which is the height of the sidewall as a percentage of the width.

So, for example, a tire size of 90/90 means that the tire is 90 mm wide, and the height of the sidewall is 90% of the width.

How many inches is a 90-80 tire?

A tire size is typically represented in a format such as 90/80-17, where the first number represents the width of the tire in millimeters, and the second number represents the aspect ratio (the height of the tire’s sidewall as a percentage of its width). The third number represents the diameter of the wheel in inches.

Therefore, a 90/80 tire has a width of 80mm and a height of 72mm (90% of 80mm). The third number, 17, represents the diameter of the wheel in inches. So, a 90/80 tire is designed to fit on a 17-inch wheel.

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