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  1. #1
    Active Member Two Rings
    Join Date
    Aug 10 2018
    AZ Member #
    424093
    My Garage
    2007 VW Eos, 2004 Excursion, V-8 Jet Boat, bikes, ancient atv
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    Finger Lakes, USA

    Optimal offset for B9 A4?

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    I have a 2017 A4 Premium with base (not sport or S-Line) suspension. I'm going to repurpose my factory 17" ET38 wheels as snow wheels, and buy aftermarket 18" or 19" wheels for 245 tires for summer.*

    What is the best offset or range of offsets. Most packages I see online are ET35, but the factory 8.0" wheels are ET40 I believe.

    I've always understood that too much outset put undue stress on the bearings and also caused wheel pull. What is the best range of offsets for this car? I get that it will look better with more outset.

    Open to input.

    ​​​​​​​Dave

  2. #2
    Stage 2 Banner Advertiser Four Rings Signature Wheel's Avatar
    Join Date
    Jan 22 2017
    AZ Member #
    391334
    Location
    USA

    We typically recommend going up to a 9 wheel with a +40 offset. Going wider will fill up the wheel opening nicely with a 255 tire.

    Relative to the 8 (+40) that you referenced, a 9 (+40) will sit 13mm closer to the fender but also 13mm closer to the inside. It will balance the wheel and tire mass perfectly. Also, keep in mind that a quality aftermarket wheel will be significantly lighter than stock. My SV104s saved 10 pounds each over factory RS3 rims.
    Signature Wheel
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  3. #3
    Active Member One Ring
    Join Date
    Oct 18 2017
    AZ Member #
    408564
    Location
    Washington D.C.

    Question for you....so with a B9 S4...I want to keep a 18" rim due to roads in the area I live.

    I like the look of the 19" offset (which I believe is ET32) but I don't want to get new tires...so does it make more sense to get some 8mm spacers?



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