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      06-26-2009, 10:56 AM   #1
Donghai
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help, some noobie question about wheels and tire

wat is offset means ?

and wat is ET stand for?
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      06-26-2009, 12:20 PM   #2
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The wheel offset is the distance the face of the mounting flange is from the centerline of the wheel. I am not sure what ET stands for, but it is placed before the offset. It might mean something to the affect that it is positive, not negative? Does anyone know this? A negative offset would mean that the mounting flange is back from the centerline.

-Andy
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      06-26-2009, 01:03 PM   #3
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ET is from the German word "Einpresstiefe", which translates to "Insertion Depth"
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      06-26-2009, 01:23 PM   #4
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Quote:
Originally Posted by askiles View Post
The wheel offset is the distance the face of the mounting flange is from the centerline of the wheel. I am not sure what ET stands for, but it is placed before the offset. It might mean something to the affect that it is positive, not negative? Does anyone know this? A negative offset would mean that the mounting flange is back from the centerline.

-Andy
+1

Offset as it is explained on TireRack:




Offset
The offset of a wheel is the distance from its hub mounting surface to the centerline of the wheel. The offset can be one of three types (measured in millimeters).*

Zero Offset
The hub mounting surface is even with the centerline of the wheel.

Positive
The hub mounting surface is toward the front or wheel side of the wheel. Positive offset wheels are generally found on front wheel drive cars and newer rear drive cars.

Negative
The hub mounting surface is toward the back or brake side of the wheels centerline. "Deep dish" wheels are typically a negative offset.

If the offset of the wheel is not correct for the car, the handling can be adversely affected. When the width of the wheel changes, the offset also changes numerically. If the offset were to stay the same while you added width, the additional width would be split evenly between the inside and outside. For most cars, this won't work correctly. We have test fitted thousands of different vehicles for proper fitment. Our extensive database allows our sales staff to offer you the perfect fit for your vehicle.
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