Weird wheel question

Discussion in 'General Motoring' started by Pat Durkin, Aug 7, 2004.

  1. Pat Durkin

    Pat Durkin Guest

    I've got a 2001 S80 with aluminum alloy wheels.

    My car is usually kept pretty clean but inevitably 2 or 3 days after a car
    wash the brake dust begins to build up and becomes noticeable no matter how
    clean the rest of the car is - but that's perfectly normal and not the point
    of my question.

    Today my wheels are dirty and I happened to see something on three of my
    four wheels that defies description, and which I've never noticed before:
    each of the three has at least one mark that looks like somebody has swirled
    something against the wheel and made a shiny round spot amidst all the dark
    brake dust. One wheel has two such marks. Two have one each, and the
    fourth has none. They are not all the same size. They range from about
    5/16" diameter to perhaps 7/8". All are near the outer edge of the wheel
    within an inch or two of the tire.

    Does anybody remember an old metal decorating technique known as "engine
    turning"? Well that's just about what this looks like. The marks look like
    the result of a deliberate act - but that's impossible.

    I certainly didn't do it myself and the car is never parked in an area where
    it might be vandalized.

    I'm stumped. I have no idea what could cause something like this. I took
    some digital pictures if anybody wants to take a peek and offer some kind of

    Reply to the group.

    Pat Durkin, Aug 7, 2004
  2. Pat Durkin

    Boris Mohar Guest

    Send me a picture


    Boris Mohar

    Got Knock? - see:
    Viatrack Printed Circuit Designs

    void _-void-_ in the obvious place
    Boris Mohar, Aug 7, 2004
  3. Pat Durkin

    Guest Guest

    send picture to

    chuck petterson
    Guest, Aug 7, 2004

  4. sound like a form of crop circle to me ;)
    send me the pics m8
    dave manchester, Aug 7, 2004
  5. Pat Durkin

    Pat Durkin Guest

    Don't laugh. I've been thinking the same thing.

    Pat Durkin, Aug 8, 2004

  6. ???????????????????????????????????????

    got me m8?
    it can only be someone messing about

    dave manchester, Aug 8, 2004
  7. Pat Durkin

    KerbKlipper Guest

    I've had something similar on my wheels - and in my case it's all the local
    cats marking my car as their own...
    KerbKlipper, Aug 8, 2004
  8. Pat Durkin

    Pat Durkin Guest

    That's as good a guess as any but go to this link, look at the actual spots
    and then think a little more...

    I listed my name on Brickboard as "crocodile"

    Pat :)
    Pat Durkin, Aug 8, 2004
  9. Pat Durkin

    Bob Noble Guest

    Checked out your pictures at the Brickboard site, Pat - - -

    Living in Anaheim, you've got some good institutions of higher learning
    in the area. In your situation, I'd get on to an entymologist at one of
    the Cal State campuses and see if there's some insect that lives in your
    area, likes the color of your car, etc. They love weird things such as

    bob noble
    Reno, NV, USA
    Bob Noble, Aug 9, 2004
  10. Pat Durkin

    GC Guest

    I looked at the pictures on the Brickboad, and have a question:
    Are the circles on the surface, or do they have depth?
    GC, Aug 9, 2004
  11. Pat Durkin

    Randy G. Guest

    dog pee

    Don't taste it...
    Dog's _can_ pee.. REALLY!
    Dog pee.
    Yup... dog pee...
    __ __
    Randy & \ \/ /alerie's
    '93 960 Estate
    Randy G., Aug 9, 2004
  12. Pat Durkin

    Mike F Guest

    To me it looks like one end of a short thread (or similar) was stuck to
    the wheel, spun around in the wind for a while, then blew off.

    Mike F.
    Thornhill (near Toronto), Ont.

    NOTE: new address!!
    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
    Mike F, Aug 9, 2004
  13. Pat Durkin

    Pat Durkin Guest

    They must have some measureable depth although it is not detectable when I
    put my fingers on the wheel.

    I cleaned the car up this weekend and they vanished when all the brake dust
    went away.

    Pat Durkin, Aug 9, 2004
  14. Pat Durkin

    Pat Durkin Guest

    It does, doesn't it?

    I cleaned the car up this weekend and it vanished when all the brake dust
    went away. I was afraid there would be permanent marks but apparently not.

    Pat Durkin, Aug 9, 2004
  15. Pat Durkin

    KerbKlipper Guest

    Ok Pat! It's *Nothing* like cats! :)

    Heading into pure conjecture to try and whip up a broader set of ideas, how
    about kids with one of those foam dart guns / rubber ball / Squash ball /
    bow and arrow? It might just be something deforming/compressing on impact
    leaving those concentric rings just as well as something spinning. Are there
    any forms of BB gun that could use rubber beads this size?
    I like the 'thread in the wind' idea posted elsewhere in this conversation,
    but can't figure out why a thread would be stuck there in the first place,
    and what would cause more than one to stick at one end and spin, especially
    to different wheels.

    I'm still thinking...

    (Sorry about the return address - I'm sick to the back teeth with all the
    spam. Please reply to the newsgroup.)
    KerbKlipper, Aug 9, 2004
  16. Pat Durkin

    Jordan B Guest

    Did you get an alignment done when your car was last in the shop? If
    so I would say they were the marks left behind from the the alignment
    machine and they only became visible when brake dust was introduced.
    If they are gone now then good riddance.

    Jordan 1999 S70 Loaded!
    Jordan B, Aug 11, 2004
  17. Pat Durkin

    Pat Durkin Guest

    No. The last service work was a brake job 6 weeks ago and the spots just
    showed up last week.

    They are gone now that I've cleaned the car up but the story of how they
    were created remains a mystery to me. I'm curious about whether they'll

    Pat Durkin, Aug 11, 2004
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