I swapped out some very sad stock rotors for slotted ones and I DID notice a difference but only because I'd done the pads as well and well.... fresh brakes!
Totally NOT recommending Brembo, totally recommending ATE disks with ATE pads with Ceramic, even cheaper but **much much** better than Brembo, from all standpoints
got powerdiscs on my v50 and they seem great.
ATE disks I get come like this. The nice thing is the bits the pads don't ride on stay rust free for quite a long time due to the coating.
Had German ATE disks - no dust whatever.
hatte auf meinem Golf 4 (Variant, 1.9 pd mit 74kw) nur ATE Powerdisk, um den Verschleiß zu sehen, mit vorrausschauender Fahrweise haben die Scheiben immer über 140tkm gehalten, Beläge um die 70tkm. weiterer Vorteil ist die weiße Beschichtung (nicht abputzen!) am Anfang vorsichtig Bremsen, er kann auf den ersten Fahrten auch qualmen. die verhindert aber auch Rost innen der Bremsscheiben für einen großteil der Zeit.
I went with ATE "Powerdisc" discs and ceramic pads on my e39 530d, they're beautiful brakes.
I mostly use ATE. For some more racing i often use Tarox F2000 rotors and Ferodo DS2500 pads.
A few thousand miles later and I started to noticed a some shaking in the steering wheel when braking in the higher speeds (60-80mph). I called a few shops in my area that were highly recommend on both here Reddit, yelp, and the forums. Most pointed to warped rotors. One shop says to have the rotors machined and another says to have the completely replaced. What are your guy’s thoughts on having them machined?
Zimmerman is a good brand in my opinion. Brembo quality has gone downhill fast with lots of manufacture in China. I bought a set of Raybestos (Made in USA; new old stock I think) and they warped after about 6 months with EBC Reds (I do not recommend EBC). The ATE rotors are OK for street but racing has cause some of them to break apart at the welds on the hats.
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