Wheels and tyres can greatly affect how a vehicle looks and handles. However, there are many considerations to make when choosing wheels and tyres for your car. The simplest way to find the right package is to shop according to your car’s model and make; those wanting custom wheels need to know about rim and tyre specs. Here, wheel buyers will learn about rim and tyre specifications, and about plus sizing.
A car’s wheels and rims are among its most attention-getting parts. Chrome rims offer style, while steel rims can stand up to the toughest driving conditions. Whichever material you choose, your wheels need to have the right dimensions for your car. Below is some basic information on wheel construction and measurement.
- Rim width is used to determine which tyres can be used. It’s measured from the inside of a flange to the inside of the other flange. Overall width includes each side’s bead thickness, and can vary depending on the wheel’s material.
- Rim diameter is the distance from the lower to the upper bead, not including rim flanges. The diameter is where the tyre sits, not the entire rim diameter. It’s typically measured by the inch, but metric wheels are measured by the millimeter.
Wheels can have up to eight bolts on the hub, and the number of studs is related to the vehicle’s size. The spacing between studs varies widely, and bolt pattern is one of the most important considerations when buying wheels. To measure bolt pattern, note the distance from the center of a bolt hole to the center of the one opposite. Bolt pattern is measured in millimeters, given along with the number of studs.
Wheel offset is the distance between the rim’s center line and the mounting surface. Zero offset means that hub and center line are even, and positive offset wheels have a mounting surface toward the front side of the wheel. Negative offset wheels have a mounting surface situated toward the brakes. Wheel offset is measured in millimeters, and it affects handling and suspension as well as aesthetics. Backspacing is closely related to offset; it’s the distance between the wheel’s inside lip and the mounting surface.
Tyre size, section width and aspect ratio all play a role in selecting a wheel and tyre package. Most new tyres have sizing information printed in a format listing the width in millimeters, the aspect ratio and the diameter in inches. Use this information to find a set of tyres Perth that works with the new rims you’ve just selected.Read More