Understanding the rim width & offset is key to a beautiful combination!
The offset is the distance between the “center line of the rim” and the “wheel mounting surface” (unit: mm). Positive (+) offset means the wheel mounting surface is further outward from the centerline of the rim. The wheel will be further inside the vehicle's fender.
Negative (-) offset (=outset) means the wheel mounting surface is further inward from the center line of the rim. The wheel will be further toward the fender.
What is rim width?
The rim width in essence is a size indicator for the depth of the wheel. The tire width must match both sides of the rim width when the wheel is mounted onto the tire. With Work Wheels you can choose a rim width as deep as 0.5”.
Other than just choosing a wheel design, there are many points that must be taken into consideration when customizing your wheels, such as coordinating the wheel size(inches/rim width/offset) with the vehicle. Now we will explain a few wheel setting methods to adjusting and choosing the right wheel rim width and offset for your vehicle and tires.
Selecting a rim width adequate with tires
Let’ s take a look at information about tires first. There have been more cases in which choosing thicker tires lead to better performance and overall appearance than basic tires. Determining whether a wheel can be mounted onto a tire depends on the thickness of the tire.
Setting the offset
Now we know how to determine the rim width, the next step is understanding the relationship between the calliper (brake) in the inner area and the fender in the outer area. If the positive offset is set too high on a rim with large wheels then the wheel will interfere with the inside of the fender. On the other hand, if the negative offset is too high on a rim with large wheels then the wheels will touch the fender and will protrude from the car body. When calculating the offset of your wheels, it is best to consider a good balance between the inner and outer areas due to tires and rims that stick out from the fender, which is considered a Road Traffic Law violation. You can calculate your wheel diamensions here: wwww.willtheyfit.com