Front brake rubbing

[Mwignall2]

Evening all, I’ve had my B8 Avant for around 8-9 years now and had issues with the front drivers side calliper binding a couple of times over the years, strip and rebuild usually sorts it out for a couple of years but not this time. I’ve fitted brand new front callipers, carriers, guide pins and hoses. New brembo discs and pads all round and a new genuine OEM TSW master cylinder. Full VCDS ABS bleed and the drivers front calliper still sticks. It makes a noticeable rubbing noise between 10 and 30 mph and it’s driving me up the wall. No ABS faults, pedal feel is spot on and breaking efficiency is on the money. Flew through an MOT today and the MOT tech was stumped at what else could be causing it. Any ideas? Cheers, mark.

Edited February 10, 2023 by Mwignall2

[Stevey Y]

8 minutes ago, Mwignall2 said:

Evening all, I’ve had my B8 Avant for around 8-9 years now and had issues with the front drivers side calliper binding a couple of times over the years, strip and rebuild usually sorts it out for a couple of years but not this time. I’ve fitted brand new front callipers, carriers, guide pins and hoses. New brembo discs and pads all round and a new genuine OEM TSW master cylinder. Full VCDS ABS bleed and the drivers front calliper still sticks. It makes a noticeable rubbing noise between 10 and 30 mph and it’s driving me up the wall. No ABS faults, pedal feel is spot on and breaking efficiency is on the money. Flew through an MOT today and the MOT tech was stumped at what else could be causing it. Any ideas? Cheers, mark.

Hi it could be an ABS  fault, you have done every basic so thats the last link in the chain considering Audi ABS units are notorious for failing, look on the ECU Testing website, VCDS would not show a fault as the units are only a partial monitoring for mega faults, only other thing to check is if its manual handbrake the n/s rear caliper could be sticking and as the system is a diagonal split it won't release the pressure on the o/s front caliper.

Steve.