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Thread: What wheel fitment is my car?

  
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    Alex991's Avatar
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    What wheel fitment is my car?

    I have a Y plate 1.8 sxi mk4 astra and currently has its standard alloys
    (Heres a picture)




    They are 4 stud.

    So to my question, will any 4 stud alloys that are 4x100 fitment, fit to the car with no modifications?


    Thanks
    Current - Celica GT
    Astra - Sold





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    Ben_M's Avatar
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    depends on what the offset is

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    i have no idea what that means
    Current - Celica GT
    Astra - Sold





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    lee gsi's Avatar
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    Offset is how much they sit in or out from the centrer line of the hub.

    Stick to as close to ET45 as possible.


    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.

    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.

    The truth is always the truth even if you haven't realised it yet...

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    So what offset are 17 inch A tech alloy wheels with 205/45/17 tyres ? Will they fit ?
    Current - Celica GT
    Astra - Sold





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    Quote Originally Posted by Alex991 View Post
    So what offset are 17 inch A tech alloy wheels with 205/45/17 tyres ? Will they fit ?

    the information does not give enough to say what the off set is, all you have given is the tyre size and the wheel is 17"

    you need to know the PCD and off set of the wheel

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