Discs are the cheap versions like the rs4 2 piece discs, both are not directional and only have the one part number. 370mm disc is just daft in mho
8pots are popular.
There's no doubt theyll need to do something with 500bhp in a slippery shape around 1400kg with loose talk of 600bhp
Why Dave?
Its a little overkill imvho dave, granted the car needed some braking vavva voom over the S3 setup but compare the discs to a hardy 360-365mm R8/RS6/B5 RS4 semi floater made by zimmerman stopping a 2.5 tonne barge and the newer TTRS design seems OTT and apparently somewhat lacking (admittedly anecdotally)
The non directional discs would
seem to achilles heal the arrangement, maybe better would of been the R8 Rear setup (356mmx32 / 4 pots 38/42mm pistons) which is used on the scirroco cup cars in the less homologated pacific rim race series. The TTRS disc is a new design, they go to great lengths to try to keep the weight down and then hog tie one side my making them non directional
Having said that its only track work which seems to find the apparent shortcomings, fine on the road which at the end of the day is what it is.... a road car albeit a very fast one even in std guise
Maybe they wanted some daylight between the S3 setup and the TTRS, but you would have thought going 4 pots would have ticked that box
Note copious use of
anecdotally/maybe/apparent words. Having said that if you've just deployed 40k in to a new motor and £1000 for a remap and £6-7000 on a new turbo - if there is doubt ....there is no doubt
The jury is till out on them when mapped or tracking, Ive been asked to look at brakes for two TTRS's now and in both cases the disc size is coming down not up.