I have a 2011 Scirocco TSI, I have the standard 312mm brakes and standard 18" wheels, plus 17" winter wheels.
I got some serious brake fade last week with Yellowstuff pads. I have picked up some TTRS/RS3 4 pots and I am looking at disc options, I want to be able to use both sets of wheels so I am limited to approx 350mm max disc diameter. I can make the caliper brackets and have already made a trial bracket to check clearance. I dont want to run wheel spacers, or if I do keep them as thin as possible, so I need the working part of the disc as far back as possible, but the ball joint is close - looks like about 10mm clearance from the back of the std 312mm disc - that is fairly worn.
So, can anyone tell me how close the Merc ML450 disc is to the balljoint ?
I have also found some Audi A6 discs, 347mm, 30mm thick, total hight 59.5mm - not sure if that will be too much - could well be touching the ball joint.
Audi A5 discs are another option 345mm 29.3 thick 51.8 total hight - only 2mm higher than TTS discs, but every millemeter counts !
I have a lathe/milling machine so making brackets/spacers etc is not a problem