Hey, I track. MK7.5! The floating calipers flex which means you get more pressure on the outer half of the rotor. It's annoying but it's not a problem in my experience.
Something like a Carbotech XP12 pad might do better with the heat but adding brake ducts from the RS3 is cheap and will help quite a bit.
Girodisc should have a 357mm disc available when you've gone through the OE rotors. They're slotted instead of drilled and are 2 piece (aluminum hat).
I am currently using Carbotech XP10's in front and the XP8's for the rears. I really like them and have not had an issue so far. Plus the company has great customer service. They are definitely NOT a street pad, and I need to swap them the night before a track meet and put street pads on the day after, but the effort is worth it.
I just replaced my pads all around with Carbotech so i get majorly reduced brake dust and just OEM rotors.
Used them twice. Both times had excellent speedy service for a good price. Both times were brakes on my 3 series (front discs and pads, then rears). Saved a significant chunk of cash.
If you KNOW you're going to be doing a lot of track days, you definitely want to go straight to some full blown track pads, at least for when you're at the track, along with fluid.
With the XP8s I had, I left early and bed my pads in on the way to the track.
Running Carbotech XP8 and XP10 here. They’re great on track, and also very usable on the street. I’m currently not switching back to my EBC Yellowstuff pads because the Carbotechs aren’t bad enough on the street to justify me switching pads (yes I’m a being a little lazy). They dust like mad though and are quite squeaky.
Genuine BMW pads and discs only. Driven 200k miles in my beamers. Even the e46 gets genuine BMW factory brakes. My 640i got new genuine discs and pads about a year or 2 ago. (£550 in parts, £80 labour).
I keep XP8’s on my track/weekend car full time. For me, the noise is annoying when I’m driving through town or in a parking lot because people look at me like my car is broken.
Meanwhile, my basic 330i standard rear brakes were apparently almost 500 bucks to replace…holy cow I don’t think I actually make bmw money anymore hahaha
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