@betty
Saw your comment on the AP brake kit thread, I don't "hate" TT brake discs.......its a lump of metal
The facts are thus:
They're on suffix H on the disc part number in 4 years, they've never really got them sorted....
There's too much front bias on a TTRS the disc size split is 370/310. My Kit is 362/335mm and transforms the car.
Like for like after a tailchase at Oulton two identical TTRS one OEM one AP.....the OEM was 90 degrees hotter one side than the other, mine were 100 and 190 degrees cooler. Both sides are the same part number.
Anything over 343mm should float that's straight out of the AP racing catalogue. It's why the VWR setup doesn't work on track, it's why TTRS discs don't work on a track.
Notwithstanding not all TTRS dont go on a track, a staged TTRS is capable of 185mph and a dash speed of 150 the car doesn't know its on the M6 / Brands hatch it still has to stop
Warranty replacement of TTRS discs is no longer.they've done the recall they think its fixed. Evidently its not.
Any discs being sold/purchased on eBay or here have been removed by Audi as not fit for purpose
New TTRS discs that are compliant are three times the price of the ones which were crap (they're making the customer pay for the recall) a best guess is that Audi pay Zimmerman €80 a pair for new (unconfirmed but a sensible source)
The casting for the AP rotors is straight out of the SEAT Motorsport catalogue, its a Supercopa part number.
The Road TTRS AP mounting bell and fixing system is straight off most off the VWR Cup cars this year, came second in class at the Dubai 24 and won its class at the 12 hour Mugello yesterday eclipsing LOTS of very expensive racing exotica. There is no harder test for ANY setup other than endurance racing outside of F1
Lots of TTRS references above.... a stock GTI has half the power so won't make the same demands on the stock rotor
In addition
The caliper is as fitted to a DB9 and a Ford GT, it's not the problem, the pad is from an EVO 7-10 and numerous other cars renowned for having headroom when it comes to brakes.
So trying to detach from the emotive and anecdotal portion of what' works and what doesn't ^^^^^^^ here's some facts to set the scene.