Ok, so I have a B6 S4, and the brakes are shockingly bad on it, so when it came ti time for new discs and pads, I opted to buy some used Front RS4 Calipers, discs and OEM pads (discs have 0.01mm lip, hardly even feel able, pads are audi OEM and have around half their life left)
I kept the standard wheels using 10mm spacers.
I used my mechanic (Lees garage Royton, VAG specialist) to fit them.
I expected a massive improvement, but tbh, I'm not even sure there is any improvement in braking. The brakes feel a bit soft, so to get them to work well you have to move the pedal a fair bit further down than you used to and I guess if you press it quite hard they are slightly better, but I was expecting a major improvement with brake feel and it to bite with the pedal pressed sooner rather than at the bottom.
My mechanic has bled them up properly, he is a professional and does this kind of thing day in day out, so I tend to believe there is no air in the system ? Or am I wrong ?
I'm wondering if I should get brand new Brembo or EBC pads and even possibly new phaeton discs to sharpen them up ?
Or are there other components needed from the RS4 to match the brakes to make them work properly, such as master cylinder, or ABS pump, or something ?
Any help is appreciated.