Knocking from Front Wheel

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Discussion

UpsideDown

Original Poster:

47 posts

185 months

Wednesday 1st July 2015
quotequote all
I have been getting a rythmic knocking noise from the driver's side front wheel of my A4 convertible. Initially I thought it might be a flat spot on the tyre as the car only gets used in the summer and sits in the garage for the rest of the year, but I have swapped the wheel round and the noise is still there.

The noise seems to be linked to wheel rotation as it increases/decreases in frequency depending on speed. Also the noise is greater when turning left as the load is greater on the wheel.

I suspect it may be either a worn CV joint or wheel bearing but am not sure. I haven't jacked the car up to listen to the bearings but will do so soon.

The car is 12yrs old, but has a low mileage of 45000 as its not used very much. Any other ideas would be most welcome.

shtu

3,407 posts

145 months

Wednesday 1st July 2015
quotequote all
UpsideDown said:
rythmic knocking noise
UpsideDown said:
worn CV joint
There you go. smile That's the most likely, tbh.

TonyRPH

12,963 posts

167 months

Thursday 2nd July 2015
quotequote all
Noises have a strange habit of travelling. Try swapping the opposite tyre and see if the noise goes away.

On one of my cars, I was convinced the noise was coming from the left (and thought I could even feel the drumming through the floor on the left) but it turned out that the right front tyre was badly scalloped due to a worn shock absorber.


Dr G

15,159 posts

241 months

Friday 3rd July 2015
quotequote all
Possible and it's an easy one to eliminate but from the description I'd also guess CV.