View Poll Results: Inflate your tires to 40psi cold
I noticed a worse steering wheel vibration from my previous inflation pressure
0
0%
I noticed a great improvement in steering wheel vibration from my precious inflation pressure
22.22%
Voters: 9. You may not vote on this poll
Steering wheel vibration poll
12-27-12, 10:43 PM
#1
Steering wheel vibration poll
This is a poll to determine the effect tire pressure has on reducing steering wheel vibration
This will only work if you have already done the other stuff (bushings, ball joints, motor mounts ect...) just to get that little bit left out (probably because of tires)
This will only work if you have already done the other stuff (bushings, ball joints, motor mounts ect...) just to get that little bit left out (probably because of tires)
Last edited by sam12345; 01-07-13 at 08:51 PM.
12-28-12, 12:15 PM
#2
I have never noticed air pressure as having any influence on steering wheel vibration on any car I have ever owned.
When I bought my 2001 GS430, it had a steering wheel shimmy...
Here are the things that eliminated it:
#1 (VERY IMPORTANT if you have aftermarket wheels or run spacers) - hubcentric rings
#2 Wheel balance
#3 Alignment
#4 Properly working suspension components (balljoints, caster-arm bushings, and outer tie rods all had an effect for me)
Luke
When I bought my 2001 GS430, it had a steering wheel shimmy...
Here are the things that eliminated it:
#1 (VERY IMPORTANT if you have aftermarket wheels or run spacers) - hubcentric rings
#2 Wheel balance
#3 Alignment
#4 Properly working suspension components (balljoints, caster-arm bushings, and outer tie rods all had an effect for me)
Luke
01-02-13, 11:34 PM
#4
I also have slight vibration at 55-60mph in my LS 430, but only at those speeds. Vibration seems to fade away after tires warm up. I also noticed the vibration goes away completely when I increase air pressure. I have brand new Michellin tires that have been road force balanced perfectly so its not a balance issue. This has me stumped also!
01-03-13, 06:59 AM
#5
That would be nice if a alteration in air pressure would fix shimmy. I have replaced everything on the front suspension except lower control arm 1# and the upper control arm. I'm even getting a new repacment wheel installed in the front as we speak. The wheel was bent then repaired. I wanted to eliminate all possible issues so I'm replacing with a new one.
The ball joints and tierods are a must as it fixed about 80% of my 60-70 mph shimmy. The steering rack and poly sway bushings really tightened up the front suspension.with stock wheels and I would reccommend replacing all in the front.
My theroy is that when lowered the problems in the front suspension are more noticable. When I brought the car with stock wheels and suspension I noticed no issues with the suspension or steering shake.
The ball joints and tierods are a must as it fixed about 80% of my 60-70 mph shimmy. The steering rack and poly sway bushings really tightened up the front suspension.with stock wheels and I would reccommend replacing all in the front.
My theroy is that when lowered the problems in the front suspension are more noticable. When I brought the car with stock wheels and suspension I noticed no issues with the suspension or steering shake.
01-03-13, 11:23 AM
#6
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01-04-13, 06:39 AM
#9
Interesting
12-19-2003, 11:41 AM
Air pressure will NOT affect balance.
BUT!
It can make a tire FEEL like it's out of balance.
Ok, bear with me. If a tire has some "density spots" in the sidewalls - IE, one section of the sidewall is ever so slightly thicker than the norm, THEN a lower air pressure CAN reveal this.
No, the balance won't be off, BUT it can make the tire "feel" a bit lumpy on the ride. The effect is very small - perhaps nothing more than a very minor jitter or vibration through the bars. However the effect would feel odd - one side of the tire not compressing the way the rest of the tire compresses. Could very much feel like a tire is out of balance.
Modern Manufacturing methods have pretty much eliminated this potential, but it IS possible.
Scot
12-19-2003, 12:34 PM
BMW-K said:
Air pressure will NOT affect balance.
BUT!
It can make a tire FEEL like it's out of balance.
Ok, bear with me. If a tire has some "density spots" in the sidewalls - IE, one section of the sidewall is ever so slightly thicker than the norm, THEN a lower air pressure CAN reveal this.
No, the balance won't be off, BUT it can make the tire "feel" a bit lumpy on the ride. The effect is very small - perhaps nothing more than a very minor jitter or vibration through the bars. However the effect would feel odd - one side of the tire not compressing the way the rest of the tire compresses. Could very much feel like a tire is out of balance.
Modern Manufacturing methods have pretty much eliminated this potential, but it IS possible.
I was fixin to post something along these lines. Very low or Very high pressure can make the tire hop or shake. Does it in cars all the time. (I used to be a tire monkey for an auto shop)
The first thing we would check when customer complained.....tire pressure.
http://www.cycleforums.com/forums/ar...p/t-68775.html
12-19-2003, 11:41 AM
Air pressure will NOT affect balance.
BUT!
It can make a tire FEEL like it's out of balance.
Ok, bear with me. If a tire has some "density spots" in the sidewalls - IE, one section of the sidewall is ever so slightly thicker than the norm, THEN a lower air pressure CAN reveal this.
No, the balance won't be off, BUT it can make the tire "feel" a bit lumpy on the ride. The effect is very small - perhaps nothing more than a very minor jitter or vibration through the bars. However the effect would feel odd - one side of the tire not compressing the way the rest of the tire compresses. Could very much feel like a tire is out of balance.
Modern Manufacturing methods have pretty much eliminated this potential, but it IS possible.
Scot
12-19-2003, 12:34 PM
BMW-K said:
Air pressure will NOT affect balance.
BUT!
It can make a tire FEEL like it's out of balance.
Ok, bear with me. If a tire has some "density spots" in the sidewalls - IE, one section of the sidewall is ever so slightly thicker than the norm, THEN a lower air pressure CAN reveal this.
No, the balance won't be off, BUT it can make the tire "feel" a bit lumpy on the ride. The effect is very small - perhaps nothing more than a very minor jitter or vibration through the bars. However the effect would feel odd - one side of the tire not compressing the way the rest of the tire compresses. Could very much feel like a tire is out of balance.
Modern Manufacturing methods have pretty much eliminated this potential, but it IS possible.
I was fixin to post something along these lines. Very low or Very high pressure can make the tire hop or shake. Does it in cars all the time. (I used to be a tire monkey for an auto shop)
The first thing we would check when customer complained.....tire pressure.
http://www.cycleforums.com/forums/ar...p/t-68775.html
01-06-13, 09:18 PM
#12
01-07-13, 05:00 PM
#14
My vibration come and goes which is odd. It is very slight and hardly noticable. Most people driving the car prob wouldnt notice it if I hadnt told them about it but an LS drives so smooth that any change in feel will be noticed by me. The poll results might not be as accurate because some people are more in tuned with their cars than others.
Last edited by gbracer04; 01-07-13 at 05:09 PM.
01-07-13, 06:58 PM
#15
My vibration come and goes which is odd. It is very slight and hardly noticable. Most people driving the car prob wouldnt notice it if I hadnt told them about it but an LS drives so smooth that any change in feel will be noticed by me. The poll results might not be as accurate because some people are more in tuned with their cars than others.
Last edited by sam12345; 01-07-13 at 07:02 PM.