How Do You Measure A 5-Lug Bolt Pattern?
A wheel’s bolt pattern indicates how the holes in the wheel will fit the lugs. The first number in the pattern is the number of bolts. It’s followed by an “x.” The final number is the diameter of the circle formed by the bolts, written either in millimeters or inches. For example, a 5×4.5 bolt pattern means the wheel has five bolt holes spaced in a circle that measures 4.5 inches in diameter. If a wheel has an even number of bolts, you can easily measure the diameter from the center of one bolt to the center of the opposite bolt; a five-lug pattern, though, requires a specialized measurement. Measure from the center of one bolt to the outside edge of another bolt that’s two bolts away, using a tape measure marked in inches. (The outside edge is the side of the bolt that’s farthest from the center of the wheel.) Convert fractional inches to decimals. Every 1/8 is equal to .125, so for example, 5 3/8 inches would be 5 plus 3 times .125, or 5.375. Round the measurement to the nearest bolt
