This number means that your tire has an aspect ratio of : R means that the tire has a. This is the height of the sidewall. The first number indicates the width. It is further broken down as. In other words, your tire's sidewall height (from. This tire size is a bit bigger than a standard passenger car tire and is often used on suvs, trucks, and vans. To put it simple, the sidewall height is 55% of the width, so it would be. This universal standard is used, so different tire manufacturers can produce tires which will fit same cars and rims. The aspect ratio refers to the calculation of tire sidewall in percentage, meaning it.
R means that the tire has a. Web what does 275 55r20 tire mean? The tire has an aspect ratio of 55. What does the 55 mean in tire size? The first number indicates the width. 55 is an aspect ration between the tread width and the sidewall in percents ;. In other words, your tire's sidewall height (from. The tire size was designed to fit rims or wheels that are 20 inches in diameter. The tread is 275mm wide, or 31.909 inches wide. R means that the tire has a. This number indicates the tire has a width of :