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Possible 18" rim dimensions

Discussion in 'New A3/S3 (8V Chassis)' started by Tom75, Oct 4, 2013.

  1. Tom75
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    Tom75 Member

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    [Oct 4, 2013]
    Hi all,

    I am planning to buy 18" wheels (I know 19" is also possible but I think it will be too much on Norwegian roads) with 225/40 tires.

    My questions are:

    - can I use 8,5 x 18 or is only 8 x 18 possible?

    - What kind of ET would you recommend for the above mentioned wheel dimensions, ET35, ET40, ET42 or ET45


    Would be nice to hear some experiences what looks good or what is impossible etc.


    Thanks and regards,
    Tom
    #1
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  3. chrismurray
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    chrismurray New Member

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    [Oct 4, 2013]
    Hi Tom

    Just so that i can advise sizes, what sort of vehicle are you looking to fit these to?
    #2
  4. cemerson
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    cemerson Well-Known Member

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    [Oct 4, 2013]
    It's in the Audi A3 8V forum, so I'd guess it'll be one of those!
    #3
  5. Tom75
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    Tom75 Member

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    [Oct 4, 2013]
    Its an A3 Sprotback 1.8 TFSI quattro S-line, 2014 model

    Thanks and regards,
    Tom
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  6. snowfree52
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    snowfree52 Full LED baby !

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    [Oct 4, 2013]
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  7. Flode
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    Flode New Member

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    [Oct 4, 2013]
    The ET is 51 ON the original 18" rotors. In "vognkortet" (pink slip???) 48 is listed as the minimum ET. But I have a 1,4. So might be different than yours.
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  8. Tom75
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    Tom75 Member

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    [Oct 5, 2013]
    Thanks for the information and the link, very useful.

    I will check this regarding ET, 48 sounds quite much. Most 18" rims which are usable for audi are between 40 and 45

    Regards,
    tom
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  9. Tom75
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    Tom75 Member

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    [Oct 7, 2013]
    Hi again,

    does anybody know what the ET is on the original 17" rims? I have the original 17" rims with 225/45 tires and they are quite much inside, so I think a little lower ET could be nice if I switch to 18" rims soon.

    Regards,
    Tom
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  10. snowfree52
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    snowfree52 Full LED baby !

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    [Oct 7, 2013]
    original ET is 51
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  11. Tom75
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    Tom75 Member

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    [Oct 8, 2013]
    Thanks for the info, so I think 51 is definitely too much. Do the S3 rims also have ET 51?

    I think I will go for something like ET45, if not 42 since there is plenty of space left.

    Does anyone maybe have rims with an ET in that range?

    Regards,
    tom
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  12. snowfree52
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    snowfree52 Full LED baby !

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    [Oct 8, 2013]
    yes, S3 has ET 51

    4 door has ET 46
    #11
  13. Brodster
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    Brodster Shark Performance In Scotland Regional Rep Site Sponsor VCDS Map User

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    [Oct 8, 2013]
    If your after some BBS then gimme a bell as I'm a dealer for them.
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  14. Tom75
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    Tom75 Member

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    [Oct 9, 2013]
    Thanks, that's interesting that the sportback, if I understand you correctly, has a different ET than the normal? Very valuable information since I have a sportback.


    Brodster: Appreciate the offer but since I am located in Norway it will be very difficult to get wheels from you.

    Regards,
    Tom
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  15. snowfree52
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    snowfree52 Full LED baby !

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    [Oct 9, 2013]
    nope, sportback is 5 door ! I was speaking about the saloon (4 door)
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  16. Tom75
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    Tom75 Member

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    [Oct 9, 2013]
    Ahh, ok thanks.

    Regards,
    Tom
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  17. snowfree52
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    snowfree52 Full LED baby !

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    [Oct 9, 2013]
    you're welcome :)
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  18. Tom75
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    Tom75 Member

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    [Mar 10, 2014]
    Hi all,

    just wanted to bring this thread up one more time since I am now getting my new summer wheels and I am still not 100% sure what ET I can actually use legally.

    It was already mentioned above that the min ET for an A3 Sportback is 48 but there are actually very little rims with so high ET, at least the ones I like.

    Anyway at the wheel dealer they told me that I can from the standard ET which is 51 go 7,5 up or 7,5 down and it is still legal which would at least mean I would be able use ET 45?

    How are the opinions about this topic?

    Regards,
    Tom
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  19. Battlekrapz
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    Battlekrapz Member

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    [Mar 10, 2014]
    I just bought some alloys for my s3 and the dimensions are:

    18" x 8.0 112 ET45 66.5
    Last edited: Mar 10, 2014
    #18
  20. Tom75
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    Tom75 Member

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    [Mar 10, 2014]
    Thanks for the input ET 45 would also be ok for me and I am thinking about the same dimension as you. Will probably be ok then?

    Regards,
    tom
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  21. Battlekrapz
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    Battlekrapz Member

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    [Mar 10, 2014]
    Well my guess is yes, if you're unsure can't you bring your car to the alloy place and ask them to try one out?
    #20
  22. Flibble
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    Flibble Member

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    [Mar 10, 2014]
    Don't forget to try a front wheel - if there are issues they're going to show up when you try to steer the car.
    #21
  23. Tom75
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    Tom75 Member

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    [Mar 10, 2014]
    I think the fitting should not be the problem, I am sure this size will fit on a 1.8 TFSI quattro the thing is that it might not be legal.

    Regards,
    tom
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  24. Flibble
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    Flibble Member

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    [Mar 11, 2014]
    As long as the tyre fits the rim correctly and it doesn't stick out from under the bodywork it should be fine.
    #23

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