So one of the brake upgrades I have seen theorized and test fitted but not actually done before is the b9 a4 calipers. These calipers are supposedly similar to the tts (both made for 338x30 rotor and same 4x38mm piston size is what I’ve heard).
Issue is when fitted to the mk7, only 320mm rotors from a b8 a4 will fit. Will running a pad made for the 338mm rotor cause issues like noise or bad brake behavior with the 320mm rotor?
Another thing is one kit I’ve seen tested fitted required milling down mounting point on the calipers to fit the rotor on a GTI. Another seller did not modify the calipers but said 3mm spacers were required for the rotor to fit the GTI. I do not have a GTI, I have a golf which has a steel hub. On the 17/18z kits from rotor labs, I’ve heard they had to also mill down caliper mounting points (they said 1/4”?) to make it fit on the GTI. So with that information, would the A4 caliper be likely to be straight bolt on to my steel hub without modifying mounting point or using rotor spacers?
This is potentially a cheaper option than the TTS calipers but with similar piston area (tho I have not had exact confirmation on A4 or TTS caliper piston sizes)
Thanks in advance. If I end up doing this, I’ll do a write up.
Issue is when fitted to the mk7, only 320mm rotors from a b8 a4 will fit. Will running a pad made for the 338mm rotor cause issues like noise or bad brake behavior with the 320mm rotor?
Another thing is one kit I’ve seen tested fitted required milling down mounting point on the calipers to fit the rotor on a GTI. Another seller did not modify the calipers but said 3mm spacers were required for the rotor to fit the GTI. I do not have a GTI, I have a golf which has a steel hub. On the 17/18z kits from rotor labs, I’ve heard they had to also mill down caliper mounting points (they said 1/4”?) to make it fit on the GTI. So with that information, would the A4 caliper be likely to be straight bolt on to my steel hub without modifying mounting point or using rotor spacers?
This is potentially a cheaper option than the TTS calipers but with similar piston area (tho I have not had exact confirmation on A4 or TTS caliper piston sizes)
Thanks in advance. If I end up doing this, I’ll do a write up.