Brake pads Carbotech or OEM BMW

From brakes have been solid

I'm liking the Carbotech 1521 pads for their better heat tolerance and modulation over OEM pads, though I feel light initial bite is slightly less.

Low dust brake pads. On my F87, I use Carbotech 1521. Slight decrease in initial brake bite, significant decrease in dust.

On a 428 both lower control forward arms including labor I believe $320 to $350

Brake pads brake, w e a r sensor and I believe both speed sensors under $400 no rotors were replaced.

Parts cost about 500$ for front and rear brakes if do yourself.

I use the XP10s on track. Highly recommend them. Since you don’t even have the Z51, likely the XP10s will be more than enough for you.

I track a WRX and have used XP12's in the front and XP10's in the rear. They work very well. IMO Carbotechs are one of the best for the track

im running XP10s... so far this set up is amazing, the braking is strong initial bite with little fade. Just take in consideration that this Carbotech pads are modular which means you will have a slight longer pedal travel than normal. And yes they are super noisy, when i drive it on the street i try to be careful with my braking and not feather the brakes, that will make then literally screech and grind the rotors, instead i try to brake a bit harder than usual to get a good bite and then let go of the brake once i stoped (put the car in neutral most of the time or creep forward little by little to releave some heat).

I use carbotech xp8s. Dtc 60 or 70s would also be a good choice. Be warned through track pads driven on the street will accelerate rotor wear. I hated the Ferodo ds2500s when cold.

As someone else mentioned, the rear brakes are tiny and even running Pagid RS29 race pads, the rears were 3mm more worn than the front after just one track day.