A 295 tire size is a metric tire size that refers to the width of the tire in millimeters. The first number in the size indicates the section width of the tire, which is the distance between the outermost points on the sidewalls of the tire when it's mounted on a rim and fully inflated. The exact equivalent of a 295 tire size can vary depending on the aspect ratio and rim diameter of the original tire. The aspect ratio is the ratio of the height of the tire's sidewall to its width, expressed as a percentage. The rim diameter is the diameter of the wheel in inches, on which the tire is mounted. As an example, a 295/35R18 tire has a section width of approximately 295 millimeters, an aspect ratio of 35%, and is designed to fit on an 18-inch rim. The overall diameter of this tire is approximately 25.1 inches (638 mm). In terms of equivalent tire sizes, a 295/35R18 tire is roughly equivalent to a 255/40R18 tire in terms of overall diameter.