YACT: I got my wheels balanced, but the shaking hasn't stopped !

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polm

Diamond Member
May 24, 2001
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OK...so I threaded an issue on here a few weeks ago about my car shaking between the speeds of 45 - 65 MPH .

The shake is an obvious 'side-to-side' shake that is felt mostly in the steering wheel, but seems to affect the entire vehicle.

I went and had my wheels balanced and the guy told me just to expect this kind of shake from my 31x10.50x15 BF Goodrich All-Terrains. "Those are aggressive tires" is what he said.

I have had these tires for about 1.5 years, and they have never given me this kind of shake before. A little vibration, yes, but this is shaking.

Anymore suggestions to eliminating the shake ?
 
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isekii

Lifer
Mar 16, 2001
28,578
3
81
check for bent rims.

mine shakes a bit after I hit a monster pothole.

no leakage tho.. so I figure i'll jsut ride on em until I go 18"
 
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polm

Diamond Member
May 24, 2001
3,183
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I just can't beleive an auto repair shop would not investigate every angle ?

I mean the alignment only earned them 40 bux...if they had offered/attempted all of these other suggestions everyone would have come out a winner.
 
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Marshallj

Platinum Member
Mar 26, 2003
2,326
0
76
Originally posted by: polm
OK...so I threaded an issue on here a few weeks ago about my car shaking between the speeds of 45 - 65 MPH .

The shake is an obvious 'side-to-side' shake that is felt mostly in the steering wheel, but seems to affect the entire vehicle.

I went and had my wheels balanced and the guy told me just to expect this kind of shake from my 31x10.50x15 BF Goodrich All-Terrains. "Those are aggressive tires" is what he said.

I have had these tires for about 1.5 years, and they have never given me this kind of shake before. A little vibration, yes, but this is shaking.

Anymore suggestions to eliminating the shake ?
Click to expand...


It's possible for your wheels to be perfectly balanced but still be out of round. Like another poster said, a bent rim will cause that.
 
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polm

Diamond Member
May 24, 2001
3,183
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I'm not sure where to begin...

should I just tell some auto-mechanic to try anything ?
 
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Soybomb

Diamond Member
Jun 30, 2000
9,506
2
81
Go to a mechanic you trust and tell him what its doing. I'd guess he would give the steering system a once over and find something that needs replacing due to wear.
 
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Marshallj

Platinum Member
Mar 26, 2003
2,326
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76
Originally posted by: Soybomb
Go to a mechanic you trust and tell him what its doing. I'd guess he would give the steering system a once over and find something that needs replacing due to wear.
Click to expand...

Huh? How would the steering system cause the car to shake? Do you have any clue about cars?
 
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RobCom

Member
Aug 14, 2000
109
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i will tell you first hand that those BFG 'big f'n tires' are very hard to balance. sometimes they take alot of weight all over the wheels to get the machine to say 'RDY' but you said these tires are NOT new? over 1.5 years old, correct? If you came to my shop I would have took it for a road test with you to make sure we were both on the same page. i've seen customers blame tires right away but failed to realize they need brakes. if the brakes get low so bad you will destroy the rotors, even warped rotors can cause vibrations not just when applying the brakes, even cruising if a rotor/drum is warped bad enough. if you have big oversized tires on that beast that aren't stock, you can bet you are over powering your stock brakes.. those big wheels are heavy... takes alot more stopping power to STOP!

Next i woulda put your truck on the lift and checked the front end (ball joints, tie-rods, etc...)... i woulda started the truck and put it in gear on the lift to see for anything that caught my eye.... i've seen things on 4wd trucks such as automatic 4wd systems malfunctions, bad universal joints, sloppy drive shafts/axle, all these things that don't seems to be related to the tires but can cause some crazy vibrations/noise if there are irregular. would have also while the tires were moving in the air check for 'shifted belts' in any of the tires... these conditions are were the steel belts in the tires are no longer round or their proper proportion...

If all was well, then i would've taken the front tires off and checked the balance with the current weights on... if the tires came out balanced and everything else was OK then i blame the tires! But one of the most important thing is a road test... most places won't to the road test because of time...and as we all know 'time is money' and in your situation they have to find a highway type road to find your symptom at 45-60mph but a good places that wants your business will do it and ask for you to be in the car!!!
 
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Quixfire

Diamond Member
Jul 31, 2001
6,892
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Originally posted by: Marshallj
Originally posted by: Soybomb
Go to a mechanic you trust and tell him what its doing. I'd guess he would give the steering system a once over and find something that needs replacing due to wear.
Click to expand...

Huh? How would the steering system cause the car to shake? Do you have any clue about cars?
Click to expand...
Simple answer for a simple question. Some vehicle with conventional steering have idler arms, when these wear they can cause vibrations at highway speeds, especially when you have large or aggressive tires.

 
Budmantom

Budmantom

Lifer
Aug 17, 2002
13,103
1
81
If the steering wheel shakes that means it's in the front tires if the seat shakes that usually means that it's in the rear.

Alignment won't cause a shake it will cause a pull.

It sounds like the tires could be "out of round", "seperated" or it could be a bent rim.
 
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Marshallj

Platinum Member
Mar 26, 2003
2,326
0
76
Originally posted by: Quixfire

Huh? How would the steering system cause the car to shake? Do you have any clue about cars?
Click to expand...
Simple answer for a simple question. Some vehicle with conventional steering have idler arms, when these wear they can cause vibrations at highway speeds, especially when you have large or aggressive tires.[/quote]

But having worn parts will only allow the bumps from the road to be felt inside the car. It will make the ride feel more rough and unrefined but it will not *create* a vibration. To have such a vibration (one that comes and goes with speed), means you have a balance or rounding issue on a moving part.
 
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Marshallj

Platinum Member
Mar 26, 2003
2,326
0
76
Originally posted by: Budmantom
If the steering wheel shakes that means it's in the front tires if the seat shakes that usually means that it's in the rear.

Alignment won't cause a shake it will cause a pull.

It sounds like the tires could be "out of round", "seperated" or it could be a bent rim.
Click to expand...

I agree.
 
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Marshallj

Platinum Member
Mar 26, 2003
2,326
0
76
Originally posted by: Budmantom
Marshallj you sure have a lot to say 1831 post in 2 months. ;)
Click to expand...

I'm bored

Actually I finished up my last project for work, and I'm still looking for a new one. There's not many new jobs out there, so after I apply to them I'm on here.
 
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Quixfire

Diamond Member
Jul 31, 2001
6,892
0
0
Originally posted by: Marshallj
Originally posted by: Quixfire

Huh? How would the steering system cause the car to shake? Do you have any clue about cars?
Click to expand...
Simple answer for a simple question. Some vehicle with conventional steering have idler arms, when these wear they can cause vibrations at highway speeds, especially when you have large or aggressive tires.
Click to expand...

But having worn parts will only allow the bumps from the road to be felt inside the car. It will make the ride feel more rough and unrefined but it will not *create* a vibration. To have such a vibration (one that comes and goes with speed), means you have a balance or rounding issue on a moving part.[/quote]You are confusing suspension with steering. The idler supports the steering linkage, if it is worn it will allow a tire or both to move back forth. As resistance on the road increases, higher speeds, this condition can be felt as a vibration.

 
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