Tyre noise after removing RFTs

[Gman124]

Last week I swapped my run flat tyres for non run flat Goodyear Eagle F1 Ays 3s on my 2015 C250 AMG line (18" wheels). Everything is fine except for a moderately loud whine /note most notably between 28 and 40 mph. It's there at other speeds but is a bit less noticeable (although is still annoying!). It's much worse on rough surfaces and is quieter on smooth surfaces. I'm pretty sure it's the tyres. The car was tracked and balanced. I took the run flats off my E92 3 series and it transformed the car and had no problems. The noise is really quite annoying and I'm going to take it back to the garage for them to check over although I don't have much hope. I'm guessing it might be the tyres just not suiting the car (particularly with the change in tyre type). I'm gonna struggle to live with this and any thoughts, help or experience would be very much appreciated!!

 

[Lennox]

Are they on the right way round?? They are directional.

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[grober]

The correct fitment check above is a good call but have you checked the pressures are correct?* Fitters sometimes overinflate to get the tyre bead to seat correctly but then neglect to correct this.
*Are Run Flats run at different MB recommended pressures to cars fitted with normal tyres? In most applications they are the same.

 

[Gman124]

Thanks guys just checked and the tyres are fitted the right way round. Not sure if there's any guidelines for pressures after swapping for non RFTs but checked and they have 33psi all round which seems sensible. I've read so many reviews that say the Goodyear Ays 3s are a very quiet tyre. Can't understand it. Don't want to pay for new tyres and go back to RFTs.

 

[skippyjasper]

Does the noise vary on curves? I’m thinking wheel bearing(s).


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[grober]

Look inside your filler cap for something like

It may be that this excessive tyre noise is down to being new and will settle down after a couple of thousand miles at the correct pressure.

 

[ringway]

Around 1000 miles I had the Goodyear Ays 3's fitted on my A6. 255/35/20.

I bought them because they were best in wet, best in fuel economy and the quietest tyre with those attributes at 69db.

I haven't tried them in an emergency wet grip situation and hope I don't have to, but I have seen better MPG (new tyres?) and they are quiet.
My previous tyres were Pirelli P Zero's.

 

[MercedesDriver]

I find it quite common just after fitting new tyres until they “settle” usually after few hundred miles when noise disappears. Give it a good motorway run and after it should be fine.

 

[Gman124]

The noise doesn't vary on curves just speed and surfaces. Will definitely ask the garage to check the wheel bearings. I've done about 600miles now and no improvement.

 

[grober]

When you say tracked and balanced did you get a full chassis alignment done? Did your previous tyres show any signs of abnormal wear patterns? Sometimes a new tyre will bring out an alignment problem in the form of increased road noise because it hasn't worn unevenly enough to mask it yet?

 

[Deletedmember130310]

Is the noise on all road surfaces or just some?
For example, some sections of the M25 are very noisy...

 

[ringway]

Is the noise on all road surfaces or just some?
For example, some sections of the M25 are very noisy...

I was speaking with someone about the racket from the concrete sections on the M25 recently and we both concluded there must be at least some extra wear on tyres. The noise is incredibly loud.
Concrete is much harder wearing than tarmac, so I understand why the keep it on sections of the M25.

 

[Gman124]

The noise is much worse over rough older tarmac. Smooth newer sections are much better which makes me think it's definitely the tyres. It's not like concrete or run flat road drone it's more like a note or reverberation. Had 4 wheel tracking done and old tyres were pretty evenly worn.

 

[CaptainChaos]

they have 33psi all round which seems sensible.

Sounds low to me on a modern car with big low profile tyres. I'd put the correct pressure in and see if it helps.