I bought R1 Concepts front rotors for my Lexus IS250 at 85k miles. My car sits at 143k miles 5 years later and they have been the BEST rotors i have ever used. I chose their Geomet coating, and they are so rust resistant it is ridiculous. I have zero rust on the veins or hub of my brakes at all after all this time. I have used Powerstop rotors in the past on numerous vehicles, but I find the zinc coating will always rust after a few years. The R1 Concepts geomet coating is the best in my experience.
I have R1Concepts Geo-Carbon series rotors (2nd vehicle I’ve used them on), absolutely no complaints from my Giulia. I’m rocking them with Porterfield R4-S pads and the bite in dry is very nice and feels the same in wet.
R1 concepts slotted drilled rotors and pads along with some GoSpeed traction drop springs and alignment.
I switched to brembo xtra dics and pads and im very happy with them.
About a year ago I looked up on a lot of forums and decided to order the original blank face rotors from brembo and EBC red stuff pads front & back. Was about $600 to 700 with the brakes pads being the most money.
I’ve ran the R1 concepts D/S with OE Pads, steel lines, MOTUL 660 fluid. I’ve got them pretty hot on mountain road runs many times, no issues.
Installed new r1 concepts drilled and slotted rotors. After break-in, I noticed a clicking sound from both front rotors, resembling a wheel of fortune. The sound happens when a pad is in. The r1 concepts rotors are dimple instead of drilled all the way through, unlike my previous Power Stop rotors. Brakes feel great otherwise, but this pesky clicking noise when I have windows down will drive me nuts. I may go back to Power Stop.
Currently waiting for the front rotors to arrive for my mk6 golf. I’m doing brembo 18z calipers with. Audi 19x8 et49 5 double spikes from a S3.
I purchased the LS400 brake calipers brand new from the Lexus dealership. I used brand new aftermarket Brembo brand OEM spec brake rotors as well. When I picked the car up from them with the LS400 brakes installed, the front brakes squealed badly immediately.
The Brembo rotors for the i3 are the poorer quality than the OEM Zimmermann. Don't waste your money. Brake dust is not a big concern in general since it washes off easily, especially for the i3.
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