335d xdrive wheel wobble under braking

[vulture1]

The car has done 30000 miles on the front discs and pads rears were changed about 10000 miles ago.

Im now getting bad juddering/wheel wobble.

Is it warped discs?
Pad deposit
or something else.
This is a rabbithole of expense I don't want to go down if it isn't a simple fix as Discs and pads are not cheap for this car. been quoted £800 for the job parts included (oem)

[d_a_n1979]

vulture1 said:

The car has done 30000 miles on the front discs and pads rears were changed about 10000 miles ago.

Im now getting bad juddering/wheel wobble.

Is it warped discs?
Pad deposit
or something else.
This is a rabbithole of expense I don't want to go down if it isn't a simple fix as Discs and pads are not cheap for this car. been quoted £800 for the job parts included (oem)

More than likely pad deposits; but it could also be worn suspension parts (bushes mainly) and that's being highlighted when you're braking...

Try some hard but safe braking (70-30) a good few times and then drive normally for 10-15mins afterwards to let the brakes cool down and see how that goes. That should clean the disc faces nicely & rid of any glazing on the pads

Discs don't warp on road going cars; nowhere near enough heat created and unless they're crap discs from factory, then it's generally the above issues

Brakes calipers can suffer from sticking sliders/pistons etc; and as said, suspension parts can start to wear and show themselves when braking hard

They can be a sod to sort unless you actually remove the parts and inspect (mainly the thrust arms, lower arms and sometimes the inner tie rods/track rod ends etc)

I refer back to my previous F01; passed MOT with flying colours; brakes brand new but still getting a slight wobble under braking... Turned out to be the thrust arm, as you can see in the link below, 2nd post down. The ball joint had failed after 4months, fitted to the car brand new before I bought it!

https://www.pistonheads.com/gassing/topic.asp?h=0&...

[Pica-Pica]

Watching this, as I have similar. I had my front discs and pads change at 46k miles. They were low, and corroded and pitted (passed MOT). I will see how it goes and get the dealer to look at and/or change the rears. The corrosion was due to reduced use during CoVID, and I suspect a road salter/gritter going by (memo to self: move car when cold nights expected).

[vulture1]

Hammered the brakes from 80 to 20 on deserted road on the way home tonight a few times. I think it is better and looks cleaner as well.

Still feels like its there though so will do it a few more times.
In a related note the brakes are really good on this car.