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HELP: 17" Rims shooting off everywhere?

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by Bob129, Jul 26, 2006.

  1. Bob129

    Bob129 Member

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    Hey all,
    I've recently put on sum VZ SV6 rims on my car (vs s2), i had the wheels balanced because they were randomly going off in different directions, i think it has to do with the road surface, like it hits a dip or a bump and that makes the wheels bounce of a certain way, even a tiny change in surface made the wheels react, so anyway, got wheels balanced, seemed a little better, but might have just been in my head, hoping it was better, and so now ive had enuff!! im driving along and the wheels just jolt the car in different directions all over the place!!
    The wheels are 235/45/R17 Bridgestone Potenzas pumped to about 36PSi, and have been balanced once.
    So my question is, was the balancing stuffed, and should i get it redone? or is it common for this to happen and i just have to put up with it because thats the price for good looks??

    Help!

    Thanks,
    Rob
     
  2. hako

    hako Donating Member

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    Drop the tyre pressures to about 30psi so the tyres can grip the road properly. The ride will be softer as well.
     
  3. Bob129

    Bob129 Member

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    ahh k, only thing was i was reading a HSV tyre placard, (the ones they sell on ebay) and for 17" rims it says to have the wheels between 32 and 39, 32 being normal load, and 39 being maximum load...if i drop the pressue to say 32, will this fix the random jolting of the wheels?
     
  4. HDT_aero

    HDT_aero Banned

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    the jolting indicates a suspension problem there is no reason larger rims or tyres will make the wheels change direction randomly however they will make a suspension issue more apparent

    by the sounds of it i would say that you have worn bushes and/or strut tower rubbers or if your slack go to pedders and get the $14 suspension check and they will tell you exactly whats wrong ... you dont have to get them to fix it thow they can be a bit pricy
     
  5. Bob129

    Bob129 Member

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    hmmm, dunno if this is relevant, but the wheels diameter overall, rims+tyre are the exact same as i had on before. I now have 17" with 235/45 tyres, and i had 15" with 205/65 tyres before. So the exact same diameter. Wouldnt i be feeling the suspension problem then? because the ride was fine before the wheel change, or does the weight in the wheels have something to do with it too?
     
  6. TheForgotten

    TheForgotten only human......

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    more about having less sidewall flex. the 17's aren't absorbing the impact as much as the 15's did
     
  7. Bob129

    Bob129 Member

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    ahh k, yer makes sense, so do i lessen the PSi, or take it in for suspension check? or is there anything that could b wrong?
    thanx
     
  8. Bob129

    Bob129 Member

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    anyone know?
     
  9. Scooter79

    Scooter79 New Member

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    Seems pretty simple to me. Drop the tyre pressure to 32 then take it for a drive. If it is no better then you should take it somewhere like Pedders for a $14 check. $14 is nothing for a little piece of mind.
     
  10. VY2ENJOY

    VY2ENJOY New Member

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    Definately sounds like bump steer, get your suspension checked and a good wheel alignment done as well, you dont have lowered suspension do you? if a wheel alignment wasnt done to well after the lowering job this will cause problems like this, if your wheel alignment has gone out or as mentioned your suspension bushes are worn, it will all be adding up to this problem. Lowering tyre pressure will soften the ride but I dont think it will solve your problem.
     
  11. Bob129

    Bob129 Member

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    ahh k, well i'll take it down to pedders and see what they think..i'll let you guys know the outcome.
    Cheers.
     
  12. calaisSport

    calaisSport New Member

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    yeh bit late now but ur issue would be tyre pressue or ur steering rack
     
  13. fuel_within

    fuel_within Chief Executive

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    Has it been wheel aligned??
     
  14. Bob129

    Bob129 Member

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    yer, i think tyre pressure could b a cause, because ive noticed that it isnt so bad early in the morning or late at nigth when the tyres would b a bit colder...still gonna go to pedders and double check everything is alrite tho!

    Cheers
     
  15. hako

    hako Donating Member

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    If it was bump-steer it would have been happening before the 17" rims were put on. As I said before, drop the pressure. Do this before going to Pedders because they may talk you into something you really don't want/need.
    Letting the air out will cost zilch, zero, nil.
    Go to a steering/suspension specialist and you will be like butter in their hands.
    But as always, the choice is yours. Good Luck.
     
  16. VS CALAIS

    VS CALAIS M6 VF SSV

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    correct me if im wrong but i read somewhere that certain tyres on certain cars tend to tramline (follow the bumps and grooves in the road) makes it feel like its wondering all over the road....like i said could be wrong ?
     
  17. Bob129

    Bob129 Member

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    yer, its definitely tram lining as u described, it goes off in all directions depending on the bumps and grooves of the road, im gonna lower the pressure tonite, i have a feeling its goin to lessen the frequency of this happening, but will still happen, but who knows! i'll post back tommoz!!
     
  18. harvs01

    harvs01 New Member

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    Coz the tyres ar wider

    my car done/does the same thing you guys are talking about, i got all my stuff checked out steering links suspension so on and so on, pumped tyres deflated tyres and nothing worked. thats the way it is because you have a wider tyre on there now it covers more of the road surface so now your really gonna know how smooth a road surface is.

    even 2 of my mates do that as well and one of them have a VY Commo. and the other has a VP.

    our wheels are all 18" and all do the same thing. so i prob wouldnt be in to much of a hurry to get it checkeced out, you can always wait till your next service when they check everything or just as em to check all sus bushes and stuff,
     
  19. VY2ENJOY

    VY2ENJOY New Member

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    I have fitted a set of VZ SV6 rims (17") to my VY berlina and have never felt this "tram lining" the car tracks as good as it did with the old rims, so I dodnt think any car should do this, never happened with my VS Calais either and that had 18's on it and was lowered, once again tracked dead straight, never wanted to steer its self, personally I would try and get rid of this problem, either by playing with tyre pressures (I always have run 38 psi in the front and rear, exept with a load and then I push the rears to 40 psi) or get it checked out buy some one. Its not normal, SV6's, SS's and Club sports with rims from 17"-19" dont do this, so yours shouldnt either.
     
  20. Bob129

    Bob129 Member

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    well ive deflated the tyres last nite to 32PSi, and it is driving considerably better. I can still feel it sumtimes but it is much less common and is bearable. I may go to pedders next week and get their safety check done, but we'll see lol.
    Thanks.
     

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