A car wheel is measure by its width, height, diameter, backspacing and offset. Each area covers a specific distance found on the wheel, the height for example, is the distance from one lip to the other. More »

Measuring the wheel's diameter is done by simply measuring across its center, and the wheel width is measured across the barrel from front to back. The bolt pattern is the number and arrangement of the lug nuts that hold... More »

If the radius of the circle is known, the diameter formula is diameter=2R, where R equals the circle's radius. If the circumference of the circle is known, the diameter is found using diameter=C/Pi, where C is the circum... More »

A golf cart tire sizing code comprises of three numbers that indicate the height and width of the tire and wheel diameter, respectively. All the measurements are given in inches. The letters after the numbers indicate ho... More »

A tire size chart is used to translate the letters and numbers found on a tire's sidewall and contains information about tire class, width, aspect ratio, construction and wheel diameter. If you aren't familiar with readi... More »

When purchasing new tires and rims for a car or truck, buyers need to know the manufacturer-specified wheel rim dimensions, including the tire width and diameter. Buyers also need to the know the offset, bolt pattern and... More »

A tire is measured by width in millimeters from side wall to side wall, aspect ratio, which is the cross section height of the tire to the width, and wheel diameter. The markings on the tire display all the measurements,... More »