Tips For Understanding Wheel Sizes

If you are in the market for new wheels for your vehicle, it’s important to understand wheel sizes – not only how to read and interpret the numbers, but also how to judge which wheels will be the best fit for your car. There are several factors that contribute to wheel size. Wheels in Fargo ND are described according to their diameter, width, bolt pattern, offset, and finish.

The first two numbers in a size description are written like a multiplication problem: 15×7, for example. These numbers indicate that the wheel has a diameter of 15 inches and a width of 7 inches. The diameter is measured across the center of the wheel, from one side to the other. The width is measured across the front of the wheel, from the front rim to the back rim. These measurements are typically expressed in inches.

The next numbers in a size description represent the bolt pattern. 5-115, for example, indicates that the wheel has five bolts and that they are spaced 115 mm apart. When selecting new wheels for a car, it’s essential to get wheels that match the car’s bolt pattern exactly. However, beware of aftermarket wheels that claim to be “lug-centric,” that is, centering the wheel with the lugs rather than a tight fit over the hub. Aftermarket wheels that are not made to fit the specific diameter of your car’s wheel hubs must be fitted with spacers so that the hubs, not the lugs, bear the full weight of the car along with the force of any impact that occurs.

The next number in a wheel size description indicates the offset. It is the distance in millimeters between the center line of the wheel and the hub-mounting surface. If the mounting surface is on the outside of the car, the offset is positive; the vast majority of wheels, both OEM, and aftermarket, have a positive offset. It’s important that new wheels have the same or a very similar offset to the original wheels; otherwise, the new wheels might end up rubbing against the suspension.

The final piece of information in a wheel size description is the finish. Some of the most popular finishes are painted, polished, machined, silver, and chrome. Most aluminum allows Wheels in Fargo are available in a variety of sizes and finishes. For more information, visit

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