Strange grinding noise on Audi coupe

[Nick45]

Anyone come across this before? When the wheel is turned to the left at speed I get a "strange grinding noise"(c) which seems to be coming from the centre/ front of the chassis.

Go on, astound me with your acumen!

[chris_n]

Wheel bearing?
CV Joint?
Passenger's teeth?

[Nick45]

I try not to carry passengers Chris; they slow you down and get in the way. I thought maybe wheel bearing too though, except I'd expect it to make a bit of noise even in a straight line if it was on the way out. And I think it would only grind if it was completely collapsed. Dunno about CV joint problems . . .

[Nick45]

I try not to carry passengers Chris; they slow you down and get in the way. I thought maybe wheel bearing too though, except I'd expect it to make a bit of noise even in a straight line if it was on the way out. And I think it would only grind if it was completely collapsed. Dunno about CV joint problems . . .

[Nick45]

I've now moved on to suspecting the suspension top mounts (with apologies for my double post earlier). Apparently it's a common problem. Anybody else had this? Cheers, Nick.

[chris_n]

So presumably you only get it while turning the steering wheel, and once it's on a constant amount of lock it stops?

[Nick45]

Yes to the first question Chris - I'll get back to you on the 2nd. I had it in my head it was constant regardless of the amount of turn but I'll check it out on the way home tonight. Cheers for your interest mate - appreciated.

[Nick45]

Chris - the grinding is apparent regardless of the amount of lock on the wheel and only disappears once the car has returned to a straight line after its leftward trajectory. If I didn't know better, I'd swear it sounds like a tyre catching on the arch or something similar (but it ain't that).
I'm gonna check the exhaust mountings out this weekend and take it from there.

[phlap]

What type of Coupe have you got?
If you are front drive only please ignore

I had a similar noise on my Ur Quattro. When I turned left at speed there was a grinding noise.
It turned out to be the exhaust catching the propshaft / rear diff casing. The path of the mid and rear pipes goes very close to the rear drivetrain gubbins. Repostioned the exhaust and problem solved.

[Nick45]

It turned out to be a broken sway bar rubbing on the driveshaft. £50 later and all is well. There you go...