205 55r16意思

"205 55R16" is a tire size designation, where:

• "205" refers to the tire's width in millimeters. This means the tire is 205 millimeters wide.
• "55" refers to the aspect ratio, which is the ratio of the tire's height to its width. In this case, the tire's height is 55% of its width.
• "R" stands for "radial," which indicates the construction method of the tire. Most tires sold today are radial, meaning the layers run perpendicular to the tire's centerline.
• "16" refers to the wheel diameter in inches. This means the tire is designed to fit a wheel that is 16 inches in diameter.

So, a tire size of 205/55R16 means the tire is 205 millimeters wide, has a height that is 55% of its width, is a radial tire, and is intended for a wheel that is 16 inches in diameter.