I have an 1996 Audi A8 Quattro

--- Problems ---
I have recently noticed that my car seems to make a squeaking
(squeak...squeak) noise while turning left. The noise increases as the
accelerator is pressed. The noise is distinctly coming from the front
right side. There is no noise while turning right though.

Also there is a constant light clicking sound from the front of the car
when driving on uneven terrain at slow speeds

I also feel a slight wobble in the brake peedal while braking mostly at
high speeds

i dont know if all these three are somehow realted.

--- Work done & Checks ---

I have recently changed the control arms and have re-checked them to
ensure there alright.

I have also checked the shocks and mounting.

I recently changed the brake pads but my mechanic mistakenly machined
the rotors. (I was told later that german cars should not have this
procedure done)which has resulted in a louq screech while braking along
with the wobble.

Can this be a result of the Wheel bearing or braking system components
or something else?