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What is a wheel bolt pattern chart?

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Quick Answer

A wheel bolt pattern chart is a chart that shows the number of bolts and their measurements that are used to hold a wheel onto an automobile. The first number in the chart is the number of bolts that are on the wheel, and the second number is the diameter of the circle that the bolts make.

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Full Answer

Wheel bolt pattern charts often used for people to determine what types of rims or hubcaps they will need to fit their tires. The charts show the patterns and measurements of the bolts on the wheels. Most vehicles use either 4, 5, 6 or 8 bolts, and a common measurement for these bolts is 114.3 millimeters. The measurement for all of the even-numbered bolt patterns refers to the distance in millimeters between the center of a bolt and the center of the bolt directly across on the opposite of the circle. For even-numbered bolt patters, the measurement refers to the diameter in millimeters of the circle that would exist that contains the center points of all bolts around the tire.

Sometimes, wheel bolt pattern charts have two sets of numbers. The larger number is usually the measurements in millimeters, while the second is the measurement in inches. Bolt pattern gauges help individuals determine the bolt pattern and measurements of their vehicle, as it can be difficult to measure the diameter of the circle precisely.

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