So a about a month back, I noticed the car vibrating like a wheelbarrow on the motorway at 60 mph. Now the car is 2 years old and has done about 11k miles, its been fine til now. I took it to a local shop to get the wheels balanced, but something felt off because of the amount of vibration.
I took it to a local shop, they balanced and tried to rotate the tyres, but the driver side wheel was 120g's off. No visible problems with the alloy or the tyre. They balanced it out anyway since the car was due for a service today.
The car is at Audi now and they have said that the foam acoustic insulation in the tyre has become unstuck, causing the balance problems. Foam inside a tyre? I had never heard of such a thing, maybe tyre weld, but I don't think this is it They wanted to charge me £360 to change a single tyre, I said 'no' knowing that it was much cheaper elsewhere.
So looking online tonight, noise reduction foam in the tyre seems to be a thing. PCNS (Pirelli Noise Cancelling System) but the foam coming off and causing a balance issue doesn't seem like wear and tear to me and should be covered under warranty. Thoughts?
I took it to a local shop, they balanced and tried to rotate the tyres, but the driver side wheel was 120g's off. No visible problems with the alloy or the tyre. They balanced it out anyway since the car was due for a service today.
The car is at Audi now and they have said that the foam acoustic insulation in the tyre has become unstuck, causing the balance problems. Foam inside a tyre? I had never heard of such a thing, maybe tyre weld, but I don't think this is it They wanted to charge me £360 to change a single tyre, I said 'no' knowing that it was much cheaper elsewhere.
So looking online tonight, noise reduction foam in the tyre seems to be a thing. PCNS (Pirelli Noise Cancelling System) but the foam coming off and causing a balance issue doesn't seem like wear and tear to me and should be covered under warranty. Thoughts?