Front tyres replaced, Steering Vibrates?

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Sat 18 Mar 2006 06:30
Front tyres replaced, Steering Vibrates? - marty69
Hi

A few days ago i took my VW golf into a tyre place and had the two front tyres replaced and the wheels were supposedly balanced as part of the price, however now when i go over 70 ish miles an hour i get vibration through the steering wheel, which to me indicates the two front wheels are out of balance.
Before i go back and complain and they try to charge me to get them balanced because of ( Fill in excuse here )any ideas of what to tell them? And am i mad or have they not done their job properly.

Cheers guys
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Sat 18 Mar 2006 07:07
Front tyres replaced, Steering Vibrates? - storme
they havnt done the job properly

but it could simply be that the weight has fallen off


--
www.storme.co.uk
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Sat 18 Mar 2006 08:47
Front tyres replaced, Steering Vibrates? - Peter D
Just take them back they get it wrong all the time. I personally ask them when they think the wheel is balance to turn the rim roung by 90 degrees and spin it up again and if it is still in balance then fair enough. Regards Peter
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Sat 18 Mar 2006 12:22
Front tyres replaced, Steering Vibrates? - Dynamic Dave
they havnt done the job properly
but it could simply be that the weight has fallen off


or that the tyres have slipped on the rim where they haven't been allowed time to bed down properly.
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Sat 18 Mar 2006 10:39
Front tyres replaced, Steering Vibrates? - MW
Take it back, get them redone and personally watch the machine. After balancing get them to respin it. The screen should show zero. i.e. spot on.
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Sat 18 Mar 2006 10:50
Front tyres replaced, Steering Vibrates? - bell boy
i balance my own with a good ole bubble balancer,it never wants servicing like the tyre bay ones do but just a quick wipe of the magic eye bubble once a year :)
As said take it back and they will check it for you, its a good idea anyway as new tyres do go faulty which is why they should be run in to dry them out.
You may just have a faulty tyre.
--
\"a little man in a big world/\"
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Sat 18 Mar 2006 11:38
Front tyres replaced, Steering Vibrates? - L'escargot
If the wheels are alloy make sure they fit the correct type/shape of weight. In general, weights intended for steel wheels aren't suitable for alloys and can quickly fall off. For alloys I always specify self-adhesive weights fitted on the inside of the wheel, i.e. so they're not visible. Fortunately, because of the shape, it's impossible to fit weights to the edge of the rim of the alloys of my 03/03 Focus.
--
L\'escargot.
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Sat 18 Mar 2006 11:39
Front tyres replaced, Steering Vibrates? - 659FBE
There is a profound difference between static and dynamic balance. A spirit level balancer will not correct dynamic imbalance.

Imagine a wheel as a perfect solid disk. Balanced, because it's perfect. Now add weight to one side on one face (say the outer face). Out of balance. Now add the same value of weight across a diameter on the same face. Balanced, and would pass the spirit level test.

Now transfer the second weight to the opposite face of the wheel (say the inside) at the same point on the circumference. This would still pass the spirit level test (statically balanced) but would wobble when revolved due to the forces acting as a couple across the thickness of the wheel. Dynamically unbalanced.

This explains why you need weights on both the inside and the outside rim of a wheel to achieve good static and dynamic balance. Most tyre shop errors are either due to inattention of the operator or a failure to correctly centre the wheel on the machine.

659.
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Sat 18 Mar 2006 11:55
Front tyres replaced, Steering Vibrates? - L'escargot
acting as a
couple across the thickness of the wheel. Dynamically unbalanced.


659, excuse the explanation for the benefit of the uninitiated ~ in this context a couple is a twisting effect.
--
L\'escargot.
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Sat 18 Mar 2006 11:40
Front tyres replaced, Steering Vibrates? - L'escargot
i balance my own with a good ole bubble balancer ....


At the risk of displaying my ignorance, what's a bubble balancer?
--
L\'escargot.
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Sat 18 Mar 2006 11:48
Front tyres replaced, Steering Vibrates? - 659FBE
Essentially a spike on which the wheel is rested, horizontally at its centre. If the wheel is statically out of balance, it won't rest absolutely level until weight is added to the light side.

659.
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Sat 18 Mar 2006 12:04
Front tyres replaced, Steering Vibrates? - bell boy
it might be a dinasour in technical terms but its worked on everything ive run for 20 years perfectly including commercials if they arent too heavy, the only wheels its not keen on are mk2 golf steels.
--
\"a little man in a big world/\"
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Sat 18 Mar 2006 12:16
Front tyres replaced, Steering Vibrates? - L'escargot
it might be a dinasour in technical terms but its worked
on everything ive run for 20 years perfectly including commercials if
they arent too heavy, the only wheels its not keen on
are mk2 golf steels.


Some suspension systems are more tolerant to dynamic imbalance than others. Perhaps you have been fortunate enough to have systems that were very tolerant.
--
L\'escargot.
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