What are the general sizes of engineering wheels?

The size of construction vehicle wheels generally includes different combinations of tire width and wheel diameter. Common tire model specifications include:

185/65-R14
185/65-R15
205/55-R16
The numbers in these specifications have different meanings:

185 means that the width of the tire is 185mm.

65 represents the tire aspect ratio, which is the ratio of the sidewall height to the tire section width.

R14, R15, R16 represent the diameter of the wheel in inches.

In addition, the wheel size usually has 14 feet, 15 feet, 16 feet and 17 feet options. For example, the tire specification used by the SR18M mechanical single steel wheel vibratory roller is 15-25-16PR, where 15 represents the cross-sectional width of the tire, 16 represents the wheel diameter, and 16PR represents the tire layer structure.