jamesmartin
Well-Known Member
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- 91,879
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- louth lincs
poly bush tube isnt more likely to wear bolts than std bush ,poly bushes will never last as long as original ,but they are very easy to change
Ride Characteristics?
- Thread starter DoZZa
- Start date
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DoZZa
New Member
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- 67
- Location
- North Devon
Thanks all for your responses.
Seems there are a few avenues to explore.
However, I have since taken the car to Devon 4x4 who will be undertaking the work to put it right as to be honest I simply dont have the correct tools to carry out the job in the proper manner.
Probably best to just pay to get someone who knows what they are doing!
Today I will be fitting some brand new 'Tempest' style 16" wheels with 255/65/16 General Grabber UHP's.
I think these will pretty much cure the tramlining, but will not cure the wandering which is believed to be caused by a few worn bushes.
I will update this thread when I have further information.
Cheers
Seems there are a few avenues to explore.
However, I have since taken the car to Devon 4x4 who will be undertaking the work to put it right as to be honest I simply dont have the correct tools to carry out the job in the proper manner.
Probably best to just pay to get someone who knows what they are doing!
Today I will be fitting some brand new 'Tempest' style 16" wheels with 255/65/16 General Grabber UHP's.
I think these will pretty much cure the tramlining, but will not cure the wandering which is believed to be caused by a few worn bushes.
I will update this thread when I have further information.
Cheers
DoZZa
New Member
- Posts
- 67
- Location
- North Devon
Well what can I say.
I have today had 4 brand new 16" alloy wheels with 4 brand new General Grabber UHP 225/65/16 fitted to the P38.
The ride of the car has been transformed. There is still a slight wander on certain road surfaces, so I think some bushes still need to be changed. But the ride is greatly improved. Much more comfortable, a lot more like the magic carpet ride I have been reading about.
Although there is one issue that I am a little concerned by, previously the diffs made little noise. But now they are notably louder on de acceleration. While accelerating the diffs seem quiet enough.
Why would a wheels and tyre change make the diffs all of a sudden begin to make increased noise? All that has been done is the wheels and tyres changed.
Apart from the added diff noise, I am very happy that the ride has been improved so much just by changing the wheels and tyres, but as I said previously, I am having a hard time to understand why!
I have today had 4 brand new 16" alloy wheels with 4 brand new General Grabber UHP 225/65/16 fitted to the P38.
The ride of the car has been transformed. There is still a slight wander on certain road surfaces, so I think some bushes still need to be changed. But the ride is greatly improved. Much more comfortable, a lot more like the magic carpet ride I have been reading about.
Although there is one issue that I am a little concerned by, previously the diffs made little noise. But now they are notably louder on de acceleration. While accelerating the diffs seem quiet enough.
Why would a wheels and tyre change make the diffs all of a sudden begin to make increased noise? All that has been done is the wheels and tyres changed.
Apart from the added diff noise, I am very happy that the ride has been improved so much just by changing the wheels and tyres, but as I said previously, I am having a hard time to understand why!
Datatek
Well-Known Member
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- 44,163
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- Near Poitiers SW France
Are you sure it's the diffs and not the tyre tread making the noise? Any remaining wander is just as likely to be the drag link or track rod as the bushes. The ride is better because of the increased compliance in the deeper tyre side walls.
DoZZa
New Member
- Posts
- 67
- Location
- North Devon
I did think this maybe the tyres, but surely they would make noise at all times, not just while de-accelerating?
I would have thought that more movement in the tyre wall would amplify any wandering, but then I am certainly no expert in chassis dynamics.
DoZZa
New Member
- Posts
- 67
- Location
- North Devon
Just a little update.
The wandering has pretty much disappeared from the car now after the wheel and tyre change to 16's.
The steering damper has a little play so this will be replaced forthwith. which should improve things even further.
The noise from the diffs has improved with different tyre pressures.
The tyre fitter put 34 psi in the front and 32 psi in the rear.
I dropped the front from 34 to 28 and left the rears at 32 and the noise has been reduced somewhat. Still apparent at some speeds but still quieter.
What is a little odd about the noise is that some bumps in the road will stop the noise from occurring for a split second, once the car settles again, the noise is back. I am thinking that the prop shaft might need a bit of grease.
Any further input on the possible cause of the noise?
The wandering has pretty much disappeared from the car now after the wheel and tyre change to 16's.
The steering damper has a little play so this will be replaced forthwith. which should improve things even further.
The noise from the diffs has improved with different tyre pressures.
The tyre fitter put 34 psi in the front and 32 psi in the rear.
I dropped the front from 34 to 28 and left the rears at 32 and the noise has been reduced somewhat. Still apparent at some speeds but still quieter.
What is a little odd about the noise is that some bumps in the road will stop the noise from occurring for a split second, once the car settles again, the noise is back. I am thinking that the prop shaft might need a bit of grease.
Any further input on the possible cause of the noise?
- Posts
- 724
- Location
- Lincolnshire
Someone on here recently had diff noise and was rather supprised to find very low oil level, so worth checking. I replaced rear shocks a week ago, again another improvement in handling see and not expensive to do. As Data says, could well be tyre noise even if only when slowing down due to the dynamics of the system.
A change in rim diameter even an inch can be felt immediately at the wheel and in the seat. I went to plus 1 wheels and tyres on my Audi (17"-18") and it was like the whole suspension tightened up 25 percent. The ex-wife went from 15" to 16" on her Lexus saloon and demanded to go BACK to the stock wheel, stiff as it was with the lower sidewall.
A shift from 16 inches to 19 cuts the sidewall ratio a boatload.
A shift from 16 inches to 19 cuts the sidewall ratio a boatload.
DoZZa
New Member
- Posts
- 67
- Location
- North Devon
Noise from diffs is pretty much gone now. Happens occasionally.
I would just like to say thanks to those that have contributed to this thread, you have helped me out a lot.
So thanks
I would just like to say thanks to those that have contributed to this thread, you have helped me out a lot.
So thanks
