What is alloy wheel offset?
What is alloy wheel offset?
The offset of an alloy wheel is the distance in mm between the centre of the wheel barrel to the mounting face that attaches the wheel to your vehicle. Offset is usually represented as an ET number, with the number noting how many mm is between the centre of the wheel and the mounting face.
How to calculate the offset on an alloy wheel?
1 Measure the overall width of the wheel in mm 2 Find the centre line of the wheel, exactly half of the overall width 3 Measure the distance from the back edge of the rim to the mounting face 4 Take the distance of the centre line away from the distance between the back edge and mounting face
What’s the offset on an ET45 alloy wheel?
For example, an ET45 wheel measurement has a positive offset of 45mm, which means that the mounting face is 45mm in front of the centre line. Conversely, a wheel with ET-12 will have a negative offset where the mounting face is 12mm behind the centre line of the wheel. What is wheel backspacing?
What’s the difference between wheel offset and wheel backspacing?
While wheel offset is the distance from the centre of the wheel to the mounting face, wheel backspacing is the measurement of distance from the back edge of the wheel rim to the mounting face. In other words, the space in the back of the alloy wheel.
When does a wheel have a positive or negative offset?
If the mounting surface is closer to the face of the wheel it is known to have a positive offset and if the mounting point is closer to the inside of the wheel it has a negative offset. Center or no offset is when the mounting point is directly on the centerline of the wheel. What is Wheel Backspacing?
For example, an ET45 wheel measurement has a positive offset of 45mm, which means that the mounting face is 45mm in front of the centre line. Conversely, a wheel with ET-12 will have a negative offset where the mounting face is 12mm behind the centre line of the wheel. What is wheel backspacing?
What is the offset on an ATV wheel?
The 2nd number is the measurement (in inches) from the hub to the outside lip of the rim. For example: An ATV wheel with a 4+3 offset will measure 4″ from the inside lip to the center of the rim where the hub and rim meet, and then it will measure 3″ from the hub to the outside lip.
What is the offset of a Minilite wheel?
This Minilite 6″ x 10″ Mini Cooper S wheel has a POSITIVE Offset of 15mm. It would be seen as 6″ x 10″ wheel, 4 x 4″ lug pattern, Offset of ET15. This Super Trax 7″ x 13″ Mini Cooper S wheel has a POSITIVE Offset of 7mm. It would be seen as 7″ x 13″ wheel, 4 x 4″ lug pattern, Offset of ET07.
