Hi everyone, the following happens on my car:
In the morning i hear and feel, about 3 or 4 times, a sort of hesitation/blocking on the rears. It's only a very short moment, maybe 0,5s. It sounds like there is a very small firecracker ín my tyres which gives a sort of metallic/grinding noise which is muted by the rubber of the tyre. It does it when turning at low speeds, but also straight accelerating and when off throttle, all at random. After a mile or so, it's gone. No more noise. Full throttle when warm gives normal quattro drive. I already could heard it last summer, but far less. It's becoming more pronounced now, maybe because of the cold ? There are no faults reading out OBD and the haldex got it's new oil 4 months ago.
I have read a lot about Haldex quircks icm with the Michelin Pilots 4s (i have those new all around since last summer, staggered so 255 front (at 2,8 bars) and 235 rear (at 2,4bars) and had about 2500 miles since then. Weird thing is that i don't have the 'standaard Michelin problems' such as the TC light coming on. Also it does it when driving straight, not only when turning at low speeds which also acquit the haldex. I don't have to kill the ESP for normal drive. And as said before, the sound is only audible/feelable untill 2-3 minutes after the cold start and about a mile of driving. After that first mile i can put full lock on and the car turns in circles around without any strange noises or dragging.
I discussed this with my Audi dealer. They are known with the Haldex quircks but think this is something else. They said to me that they have more 'S and RS-cars' at their dealership on which the owners have the same complaints. They disappear or grow less when it's getting warmer again ? They think it's the rear tyres settling in. You would think that is bullcrap, but when i drive the car more through the day it's almost not existing. Only after the night and a longer time stationary on my driveway it will pop up.
Does this sound similar to any of your cars ?
In the morning i hear and feel, about 3 or 4 times, a sort of hesitation/blocking on the rears. It's only a very short moment, maybe 0,5s. It sounds like there is a very small firecracker ín my tyres which gives a sort of metallic/grinding noise which is muted by the rubber of the tyre. It does it when turning at low speeds, but also straight accelerating and when off throttle, all at random. After a mile or so, it's gone. No more noise. Full throttle when warm gives normal quattro drive. I already could heard it last summer, but far less. It's becoming more pronounced now, maybe because of the cold ? There are no faults reading out OBD and the haldex got it's new oil 4 months ago.
I have read a lot about Haldex quircks icm with the Michelin Pilots 4s (i have those new all around since last summer, staggered so 255 front (at 2,8 bars) and 235 rear (at 2,4bars) and had about 2500 miles since then. Weird thing is that i don't have the 'standaard Michelin problems' such as the TC light coming on. Also it does it when driving straight, not only when turning at low speeds which also acquit the haldex. I don't have to kill the ESP for normal drive. And as said before, the sound is only audible/feelable untill 2-3 minutes after the cold start and about a mile of driving. After that first mile i can put full lock on and the car turns in circles around without any strange noises or dragging.
I discussed this with my Audi dealer. They are known with the Haldex quircks but think this is something else. They said to me that they have more 'S and RS-cars' at their dealership on which the owners have the same complaints. They disappear or grow less when it's getting warmer again ? They think it's the rear tyres settling in. You would think that is bullcrap, but when i drive the car more through the day it's almost not existing. Only after the night and a longer time stationary on my driveway it will pop up.
Does this sound similar to any of your cars ?
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