The steps for this Audi A4 brake installation manual
PREPARATION FOR THE INSTALLATION
1. Make sure that the vehicle on level concrete is parked and the parking brake on.
2Nd place keeps front and behind rear tyres.

In 1998, the procedure below was written for a 2.0, Twinspark with ventilated discs front however, should the same for all 156 models. The shape of the pads differ between ventilation and solid discs at the front. Later models have larger rear discs and therefore different rubbers. It should not matter if we speak standard brakes with normal or drilled/grooved discs with high speed road pads - the process is the same. The only difference is that some requirements have the wear indicator front, so you have to back the cable ties out of the way when not needed.

This will also space out the entire wheel, widening the track width of the vehicle. Fender clearances should be checked on lowered cars, and longer lug studs or wheel bolts are usually required. Note: The Wheel Industry Council has issued guidelines advising wheel spacers not be used. It is the responsibility of the customer to insure wheel spacers are properly specified and installed.