E31 Msport wheels
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    E31 Msport wheels

    I have a 2008 E61 530D and when looking for wheels the ET size given on this site for my car is confusing. I was under the impression that the ET on my car was 20 but according to the information sheet it says 15--32, can anybody explain please? thanks Paneuro

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    Quote Originally Posted by paneuro View Post
    I have a 2008 E61 530D and when looking for wheels the ET size given on this site for my car is confusing. I was under the impression that the ET on my car was 20 but according to the information sheet it says 15--32, can anybody explain please? thanks Paneuro
    ET is the measurement in mm from the centre line of the width of the rim to the mounting face.

    If a rim is fitted with the wrong ET it may stick out too far from the wheel arch or alternatively sink too far into the wheel arch potentially fouling on suspension components.

    The ET of 15-32 listed in the information sheet will be taking into consideration the different rim widths suitable for your vehicle.

    As you can see from the diagram below both rims have an ET of 30 but due to differing rim widths their position once fitted to the car is very different,
    ET & trye calculators can assist in selecting the correct rim like Online Wheel and Tyre Fitment Calculator. Offset, Tyre Stretch and Speedo Error | Will They Fit & https://tiresize.com/wheel-offset-calculator/


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