Wheel balancing issue with spacers????

Discussion in 'General maintenance, upgrades and modifications' started by Bossco, Oct 11, 2019.

  1. 11 Oct 2019 at 7:37 PM #1
    Bossco

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    Do spacers effect wheel balancing?

    I've ran 12mm and 15mm I my M6 for the past two years with zero issues. I've recently changed wheels and tyres and now run smaller spacers. Ever since I changed I've had a wheel wobble between 62 and 74 mph.

    I took the car back to National Tyres who immediately blamed the spacers but when I pointed out I'd ran them in the past without issue and asked about how a wider wheel with a bigger offset would effect balancing they didn't have an answer. I'm not convinced the bloke even knew what offset was.

    They said the wheel and tyre were perfectly balanced according to "the machine" but the issue is still there.

    Is the tyre fitter just a bit ****, or will the spacer be having an effect?
     
  2. 11 Oct 2019 at 7:40 PM #2
    M33SWJ

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    I had an issue on my 92...cleaned them up were they sat on the hub and rim, also changed left to right...that solved it
     
  3. 11 Oct 2019 at 7:43 PM #3
    kevM3

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    Are the wheels reps or genuine? Also the tyres could be slightly out of round? Both these attributes could cause vibration
     
  4. 11 Oct 2019 at 7:55 PM #4
    Bossco

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    Genuine wheels. It's funny because the wobble is non existant from 1mph to 61mph, then comes in from 62 but completely goes at 75.
     
  5. 11 Oct 2019 at 8:09 PM #5
    Deep pan

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    Road force balancing is the answer from what you describe :thumbsup2:
     
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  6. 11 Oct 2019 at 8:18 PM #6
    klan8456

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    Are the smaller spacers still hubcentric?
     
  7. 11 Oct 2019 at 8:35 PM #7
    Bossco

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    Yes mate. Bimec from CM Wheels.
     
  8. 11 Oct 2019 at 8:53 PM #8
    mjn

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    Didn’t think they made any smaller spacers than 12mm that were hubcentric?
     
  9. 11 Oct 2019 at 9:10 PM #9
    Bossco

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    I think 10's are the smallest
     
  10. 12 Oct 2019 at 9:51 AM #10
    jpf

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    Am I missing something here. Why not take the spacers off to see if you still have or it maybe cures the issue?
     
  11. 12 Oct 2019 at 9:55 AM #11
    lawsy

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    Don’t bring common sense into this, ha ha


    Op as above. Give it a try

    I’ve ran spacers for years on cars, and I’ve found that occasionally they can cause issue.
    Remove, change orientation, even rotating the spacer can cure it.
     
  12. 12 Oct 2019 at 10:18 AM #12
    Bossco

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    Of course I've tried this.

    There was no issue when the spacer isn't fitted. Also, there was no issue with the spacers fitted on a different set of wheels.

    I think my local National Tyres have done a shitty job. Just wondering if people have had their own issues with balancing and spacers.
     
  13. 12 Oct 2019 at 10:30 AM #13
    Bossco

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    After reading this, I've not made my original question as clear as I thought. What I should be asking is..... Does the width of a spacer effect how a wheel is balanced?
     
  14. 12 Oct 2019 at 10:33 AM #14
    Hopz121

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    No
     
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  15. 12 Oct 2019 at 10:43 AM #15
    Bossco

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    Didn't think so :)
     
  16. 12 Oct 2019 at 12:02 PM #16
    jpf

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    So if you think each individual item is perfect, that would therefore suggest an issue with the meeting faces. I'd try cleaning/scrapping everything (even if it looks clean), refit and try again :thumbsup:
     
  17. 12 Oct 2019 at 3:00 PM #17
    Blingsta

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    Or try another balancing machine!.. I had exactly the same issue with my new wheels and tires.. but I didn't have spacers.. wheels were balanced up etc, 2 days later on the motorway I had vibration between certain speeds. I went back and they rebalanced, they were all out!!! Maybe the machine needs recalibrating?
     
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  18. 12 Oct 2019 at 3:02 PM #18
    jpf

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    Except the OP states that it is fine (no vibration) without the spacers fitted?
     
  19. 12 Oct 2019 at 3:04 PM #19
    Blingsta

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    Ahhh... yes my bad.. sorry op.. I was thinking too fast Lol.
    Thank you for pointing that out to me
     
  20. 12 Oct 2019 at 3:21 PM #20
    Bossco

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    Update:
    I've taken the spacers off this afternoon and the wobble is worse than ever now. It's from around 50mph up to 70mph. Went back to the local National Tyres who still blame the spacers (it's not the spacers). They did what they call a "dynamic balance" basically they put some weights on the inside of the wheel and some closer to the outside. It's not fixed it.

    I pretty much sure it's down to a **** balance or they're machine isn't reading accurately.
     

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