Results 1 to 7 of 7

Thread: Hub Tolerance

  1. #1
    Senior Member
    Join Date
    Feb 2016
    Location
    Oxford, UK
    Posts
    159

    Hub Tolerance

    Hi All, am still chasing residual vibration.

    Would anyone know the margin for error/tolerance if checking that the hub assembly was out-of-round?

    Many thanks,

    Ian.

  2. #2
    Senior Member
    Join Date
    Jun 2011
    Posts
    240

    Re: Hub Tolerance

    Hub to wheel fit isn't going to be a problem. If it was you could see the wheel spin eccentrically. When I made hub centric rings I think they ended up being 66.8-66.9 ID, otherwise they stuck on the hub. The hubs are hardened, and you would mess up the spindle and or suspension links before you would damage the 66.6mm hub ring. Are you running MB wheels?

    Where does the vibration occur? If it is while braking it will be the rotors. If it is while driving above 55-60MPH, most likely wheel balance. If it was your wheel bearing, it would be so bad you would probably hear it. Do you have access to a shop that can balance the wheel/tire package on the car?

    Mike
    1969 Pontiac LeMans Red/Black 105k
    1993 500E Silver/Black 180k
    1991 420SEL Anthracite/Saffron 176k
    2014 Subaru Impreza

  3. #3
    E500E Guru
    Join Date
    Feb 2011
    Location
    DFW Texas
    Posts
    2,574

    Re: Hub Tolerance

    If you are chasing runout- I'd measure with the wheel mounted. Runnout- Lateral or concentricity?

    What tires are you running and how old are they? 98% of the time it's tires.

  4. #4
    .036 Hoonigan™
    E500E Boffin
    gsxr's Avatar
    Join Date
    Dec 2008
    Location
    Boise, ID, USA
    Posts
    20,578

    Re: Hub Tolerance

    Ian has been chasing vibration for 2.5 years now... all details are in this thread:

    https://www.500eboard.com/forums/showthread.php?t=9106


  5. The Following User Says Thank You to gsxr For This Useful Post:

    IanAtkins (1 Week Ago)

  6. #5
    Senior Member
    Join Date
    Feb 2016
    Location
    Oxford, UK
    Posts
    159

    Re: Hub Tolerance

    I'm asking about lateral runout.

    My mech for my 964 was looking at vibration also, and he put a dial gauge against the hub surface and found the zero point, i.e. the lowest point. From there he measured each of 5 points on the hub, and with a factory tolerance of 0.05mm, he found one point at 0.11 and another at 0.09 - so two were way out...

    I'm wondering if I should ask my merc guy to check the hubs on the 500.....

  7. #6
    Senior Member
    Join Date
    Feb 2016
    Location
    Oxford, UK
    Posts
    159

    Re: Hub Tolerance

    tyres - 3 new premium sets have been used on the car and it doesn't affect the vibration...

  8. #7
    Senior Member
    Join Date
    Feb 2016
    Location
    Oxford, UK
    Posts
    159

    Re: Hub Tolerance

    I'm guessing that I should check for lateral and radial though....?

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •