vs
Brake discs STOPTECH or GALFER
We run a Stoptech BBK on the BMW 335 car that I race in endurance races (4, 9 or 12 hour) and we run either slotted or plain rotors, but never run cross-drilled. Our rotors last longer and we don't have the cracking issues associated with cross-drilled.
Pros: rotors last longer
Cons: cracking issues
Vehicle:
BMW
I have drilled and slotted rotors on my MK7. I have never had any warping or cracking issues with them, or one any other car that I've ever had with them. Performance wise I've never noticed a difference between stock or drilled/slotted rotors except for in wet conditions. When it's wet out break feel is MUCH better with drilled/slotted rotors.
Pros: better break feel in wet
Cons: no difference performance wise
Vehicle:
Volkswagen Golf
+1 for stoptech st-40s, they're slotted 328mm rotors and 4 pot calipers. Car brakes really nice. Kept the stock rears, although had to replace calipers at about 120k as they were starting to seize. If the car sits for a few days, the rust builds up (I assume in the slots) and makes noise . Goes away after about 30-40 miles. Not sure if drilled would be better. I definitely don't regret it, but modulation from the 4-pot isn't improved the way I thought it'd be. For the same price or just a tad more I could've gone with R32/GolfR/etc. front and rear, I'd probably do that if I were to do it again.
Pros: Car brakes really nice
Cons: rust builds up, makes noise
Mileage: 120000 km
That is not true. I have been running the StopTech BBK with 355x32 floating rotors (Z4M Coupe, 3275lbs + me) for over 2 years with 25+ track days on them and they have not warped.
Pros: not warped after years
Vehicle:
BMW
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