Wheel offset (ET) is an often overlooked but crucial factor when choosing wheels for your vehicle. In this article, we'll explain everything you need to know about wheel offset and why it's so important.
What is the offset?
The offset, often abbreviated as ET, is the distance between the center of the rim and the contact surface that rests against the wheel hub. It is measured in millimeters. A positive ET value means that the contact surface is closer to the outside of the rim, while a negative ET value means that the contact surface is closer to the inside.
Why is the offset important?
Correct wheel offset is critical to the safety and performance of your vehicle. Incorrect wheel offset can lead to a variety of problems, such as:
- Impaired driving stability: An incorrect ET value can change the track width of your vehicle, which can lead to unstable handling.
- tire and wheel arch problems: An offset that is too large or too small can cause the tires to rub against the wheel arches.
- load on the wheel bearings: An incorrect ET can place additional stress on the wheel bearings and suspension components and lead to premature wear.
How is the offset measured?
Offset is measured in millimeters and can be either positive or negative. A positive offset means that the rim's bearing surface is further out, a negative offset means that the bearing surface is further in. You can usually find the ET of your current rims on the inside of the rim or on the rim bed, where it is stamped along with other specifications.
How do I find the right offset for my vehicle?
The correct offset for your vehicle depends on several factors, including:
- vehicle type: Every vehicle has specific requirements for the rims.
- tire size: Larger tires often require a different offset than smaller tires.
- chassis modifications: Changes to the chassis, such as lowering, can affect the required offset.
It is always advisable to follow the vehicle manufacturer's recommendations or consult a professional if you are unsure.
offset and rim width
Another important consideration is the rim width. A wider rim with the same offset as a narrower rim will sit differently on the vehicle. It is therefore important to consider the combination of rim width and offset to ensure that everything fits perfectly.
Conclusion
The offset is an important factor when choosing the right rims for your vehicle. It not only affects the appearance, but also the driving stability and safety of your car. Make sure you choose the right offset for your vehicle and consult a specialist if you are unsure.
We hope this article has helped you better understand the importance of offset. If you have any questions or need advice, don't hesitate to contact us.
