Table of contents: Disc brakes ↓ Drum brakes ↓
Loosen the front wheel bolts.
Raise the car.
Disc brakes
Visually assess the thickness of the brake pads. To do this, shine a lamp through the cracks in the disc or use a mirror to inspect the inner pads.
If the appearance does not seem perfect, remove the front wheels.
Check the thickness of all friction linings with a caliper (without base plate).
Visually assess the thickness of the internal linings.
The wear limit of the front and rear disc brake linings has been reached if the linings (without reason) have a thickness of 2 mm. In this case, replace all four suspension pads.
Recommendation: According to experience, 1 mm of front disc brake pad corresponds to a mileage of 1000 km. This rule is true under unfavorable driving conditions. Under normal conditions, the pads last longer. With a lining thickness of 5.0 mm (without base plate) its resource is another 3000 km.
If removed, install the front wheels.
Drum brakes
Remove the cap from the hose hole on the brake shield.
Shine a flashlight through the hole to check the thickness of the pads
The wear limit is reached at a thickness of 2.5 mm. In this case, replace all four pads.
Check that there is no grease or brake fluid on the pads.
Lower the car.
Tighten the wheel bolts crosswise to 110 Nm.
(Read the original source on the website «AUDImanual»)