Quattro groan

[rayyan171]

Is this a thing? The car makes lots of grumbling noises from the wheels when doing low speed turns (>15mph), especially when doing three point turns I can hear it. Apparently its a common thing, nothing to worry about, but tell me I'm wrong?

The car does have some weird tyres on it as well, different brands front and back.

[FLAT 6]

I've been driving an A6 Quattro since 2003 and have never had a 'groan' from the drivetrain. What sort of mileage is on the car? My last A6 went to 150k before I changed and it wasn't groaning then!

I can't imagine this is the case but Limited Slip Diffs groan a lot at slow speeds - maybe your car has a secret history as a rally car???

I'd get it checked out by someone who knows Quattros.

Al.

[Alucidnation]

Proper Quattro will sometimes scrub the tyres, especially when they are cold/old/crap if you are going full lock.

[anonymous-user]

To use an Audi euphemism, this a characteristic.

It is more noticeable with worn tyres and is related to the steering geometry, IIRC it is the ackerman angle. I'm sure someone will along soon to confirm this.

[Trev450]

This ^^. It is indeed the Ackerman angle that causes the front tyres to 'scrub' at slow speeds when on lock. I would be more concerned if it didn't do it.

[AudiSport]

Yep, had this on every Audi Quattro I’ve owned. And I’ve had about 5 from memory.

[Dr G]

Had/driven several thousand...

...and yes, it's normal.

[AudiSport]

Okay, you win! ; )

[Yertis]

rayyan171 said:

The car does have some weird tyres on it as well, different brands front and back.

This needs sorting out though.

[Dr G]

AudiSport said:

Okay, you win! ; )

Get asked this week in week out and some people *still* flat out refuse to believe you

[rayyan171]

Yertis said:

This needs sorting out though.

Certainly.

[rayyan171]

Also, how unrefined of Audi for this haha. The X5 has permanent all wheel drive, 40/60 split and yet there is no noise whatsoever, other than heavy SUV croaking when you get in! No noises when turning, no noises when at speed.