1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Wheel offset question

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by PhilMill63, Aug 25, 2012.

  1. PhilMill63
    Offline

    PhilMill63 Member

    Joined:
    Jan 11, 2011
    Messages:
    111
    Likes Received:
    0
    [Aug 25, 2012]
    I know this may sound stupid to those who know but, which way does the offset work? my wheels are et35 which has been fine until i fitted new pads, then they hit the carriers! I have now fitted 5mm spacers so I assume I now have et40?? I ask this because my wheels fill the arches right to the edge and if i change the wheels to et45 as standard it seems they would almost be proud of the arch.

    Thanks, Phil
    #1
  2. Ads

    Ads

    [Jan 25, 2015]

  3. jdp1962
    Offline

    jdp1962 Grumpy Old Moderator Staff Member Moderator

    Joined:
    May 26, 2003
    Messages:
    6,105
    Likes Received:
    957
    [Aug 25, 2012]
    The thing with offset is, it's kind of the opposite of what you expect it to be. The lower the ET number, the further out the wheels and tyres sit. So, ET45 wheels sit 10mm further in than ET35 wheels. If you are using 5mm spacers with ET35 wheels, your effective offset is ET30, not ET40.

    Slightly counter-intuitive, but that's how it is.
    #2
  4. Richardesty
    Offline

    Richardesty loves quattro

    Joined:
    Oct 10, 2008
    Messages:
    750
    Likes Received:
    16
  5. PhilMill63
    Offline

    PhilMill63 Member

    Joined:
    Jan 11, 2011
    Messages:
    111
    Likes Received:
    0
    [Aug 27, 2012]
    Thanks, but that now means I definitely don't want to put on std offset wheels! what is the minimum I can go before I hit the caliper again please.
    Phil
    #4
  6. Richardesty
    Offline

    Richardesty loves quattro

    Joined:
    Oct 10, 2008
    Messages:
    750
    Likes Received:
    16
    [Aug 27, 2012]
    That all depends on the wheel design......oh, and you want to be pushing the wheels out to fill the arches, not have em as close to the calipers as you can :arco:
    #5
  7. PhilMill63
    Offline

    PhilMill63 Member

    Joined:
    Jan 11, 2011
    Messages:
    111
    Likes Received:
    0
    [Aug 28, 2012]
    I like the older RS4/TT wheel, I think its AVUS? based on that wheel can I use the 20mm offset RS wheels????

    Thanks.
    #6
  8. jdp1962
    Offline

    jdp1962 Grumpy Old Moderator Staff Member Moderator

    Joined:
    May 26, 2003
    Messages:
    6,105
    Likes Received:
    957
    [Aug 28, 2012]
    I've no idea. Probably, I guess, but they're sure going to stick out a lot.
    #7
  9. Muzzcuzz
    Offline

    Muzzcuzz Member

    Joined:
    Sep 17, 2012
    Messages:
    34
    Likes Received:
    0
    [Sep 23, 2012]
    Okay so I've lowered my car 35mm and I'm on factory alloys at the moment (that will change). I was wondering what offset the factory wheels have.. Any Ideas?
    #8
  10. jdp1962
    Offline

    jdp1962 Grumpy Old Moderator Staff Member Moderator

    Joined:
    May 26, 2003
    Messages:
    6,105
    Likes Received:
    957
    [Sep 24, 2012]
    Have a look at your spare wheel. The offset will be stamped on the inside of one of the spokes.
    #9
  11. Muzzcuzz
    Offline

    Muzzcuzz Member

    Joined:
    Sep 17, 2012
    Messages:
    34
    Likes Received:
    0
    [Sep 24, 2012]
    I would but I've got a space saver. =/
    #10
  12. jdp1962
    Offline

    jdp1962 Grumpy Old Moderator Staff Member Moderator

    Joined:
    May 26, 2003
    Messages:
    6,105
    Likes Received:
    957
    [Sep 24, 2012]
    It's a pain, but at least you can jack it up and pop one of the wheels proper off.
    #11

Share This Page