Tyre Noise I am sure! but can't get rid of it...

[yo24]

Hi guys, bought a car a short while a go, the mechanic thinks it hasn't been used for about a year due to the rust.

So I have been driving it and the Noise started coming from the Rear Passanger Side, after 500-600 miles.

My wheel alignment was out on both of the rear wheels (worse on the rear passanger side) and now the rear passanger side is completely straight, the rear Driver is not perfect but as good as it can get (this one has no noise coming from it's area).

Both tyres have tread worn on the inside.

I had both read tyres swapped with each other which did not cure the noise coming from the Rear Passenger side.

So I had the Rear Passenger side bearing replaced with hub and and aligned and swapped the tyres but the noise is the same from that area.

The noise is paired with speed and can be heard even when crawling into a parking space and getsa lot louder on rougher roads.

The noise also changes on different road surfaces.

All tyres are the same although the from ones are new.


I am wondering if it is worth swapping fronts to abcks rather than forking out more money on new tyres but I can't think what else it can be.


I am 100% it is the tyre but what I find weird is that the rear tyres have been swapped with each other and the nosie is still coming from the same area (Rear Passenger).

Edited by yo24 on Thursday 23 August 19:53

Edited by yo24 on Thursday 23 August 19:55

[GreenV8S]

How do you know which corner the noises are coming from?

[PositronicRay]

Try a front to back swap, although I've not never tyre noise at parking speeds (except scrubbing on lock)


ETA what's the noise like?

[TooMany2cvs]

GreenV8S said:

How do you know which corner the noises are coming from?

Most people have two functioning ears, allowing determination of the direction sounds come from. It's not perfect, but it gives a bloody good guess.

OP - you've swapped the tyres, and the sound didn't move. It's not the tyres.
What you haven't mentioned is the brakes. Have you checked that you've not got a sticking caliper? What do the discs and pads look like?

[yo24]

Sorry guys, I couldn't reply yesterday as forum was locked to new members, anyway the noise is like when you bounce a basketball but then convert that sound from a bounce to a rolling. I'll get the brakes checked. The noise has been quite a bit more noticeable since I took my car on the motorway last week.

[GreenV8S]

TooMany2cvs said:

Most people have two functioning ears, allowing determination of the direction sounds come from. It's not perfect, but it gives a bloody good guess.

That can sometimes be deceptive if you're relying on the driver to do the listening since they can't get close to the source of the noise and need to be facing forward most of the time.

[yo24]

I turned my head to the left and over my shoulder and the noise sounds like its coming from rear passenger side. It started the day after a mechanic welded the exhaust back onto the very rear bracket and I always put it down to that but I don't know.

[GreenV8S]

yo24 said:

It started the day after a mechanic welded the exhaust back onto the very rear bracket and I always put it down to that

In that case I suggest you focus on the exhaust as a possible source. See if there is any potential for metal-on-metal contact, or a mounting bush that is preloaded so that it can't provide proper isolation.

Also consider that noise can echo, and vibrations carried through the structure of the vehicle may appear to be coming from places some distance from the true source, so don't get fixated on the precise position where you hear the noise.

[PositronicRay]

Have you checked the boot for basket balls?

[yo24]

GreenV8S said:

Also consider that noise can echo, and vibrations carried through the structure of the vehicle may appear to be coming from places some distance from the true source, so don't get fixated on the precise position where you hear the noise.

That was my theory with the exhaust. I'll get the weld cut off and see if it's that and swap tyres back to front, either one I'll get done first.

[PositronicRay]

yo24 said:

That was my theory with the exhaust. I'll get the weld cut off and see if it's that and swap tyres back to front, either one I'll get done first.

You won't need to get the weld cut off, unless the exhaust has been directly welded to the bodywork. (In which case you would)

[yo24]

If I am misinterpreting the noise it could be that both tyres are making the noise and it's time for different ones.. I'll do at least one of the possible fixes next week some time and keep you updated on the out come of that first. Thank you everyone!

Edited by yo24 on Friday 24th August 16:02

Edited by yo24 on Friday 24th August 16:03

Edited by yo24 on Friday 24th August 16:04

[Watchman]

yo24 said:

I turned my head to the left and over my shoulder and the noise sounds like its coming from rear passenger side. It started the day after a mechanic welded the exhaust back onto the very rear bracket and I always put it down to that but I don't know.

I have a 61-reg diesel Merc which was making a horrible resonant noise at about 1500rpm. I had both rear sections of the exhaust replaced which cured much of the noise but not all. After a fair bit of investigation by Mercedes Solihull, they concluded to remove one of the (three) middle mountings which cured it completely. They were adamant I was in no danger of losing the exhaust because of an insufficient number of mountings and since I subsequently managed to crawl underneath the car, I am satisfied with this solution.

[yo24]

Watchman said:

I have a 61-reg diesel Merc which was making a horrible resonant noise at about 1500rpm. I had both rear sections of the exhaust replaced which cured much of the noise but not all. After a fair bit of investigation by Mercedes Solihull, they concluded to remove one of the (three) middle mountings which cured it completely. They were adamant I was in no danger of losing the exhaust because of an insufficient number of mountings and since I subsequently managed to crawl underneath the car, I am satisfied with this solution.

I think I will get the exhaust disconnected first, there is a risk on mine as the centre bracket is rusted so there will be more load on the centre bracket although I would just get a new centre bracket put on if disconnecting the exhaust from the rear cures it.

[Watchman]

Please note, my problem was revs-related and not speed-related.

[yo24]

I forgot that it's bank holiday today!

As I was waiting for the garage to open and before rememberin that it's bank holiday and taht nobody will be there ha, I noticed a creeking noise when applying the hand brake and also after releasding the handbrake or pedal brake when the car is stationary so now no brakes applied! I can still hear creeking from the brakes (both read brakes but more so on the read passenger side when releasing the parking brake). So maybe like one or two of you said it could be a brake issue.