I have used rotors from R1 Concepts for over 15 years, on vehicles ranging from a Dodge Caravan, Chevy Trailblazer, to multiple BMWs and have never had an issue. They’re high quality and good price and I highly recommend them.
Its been just under a week after installing R1 Concept's Geomet drilled/slotted rotors and ceramic pads, I am impressed. Extremely quiet and smooth ride but once they're hot, they get aggressive.
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’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.
I just installed front axle drilled and slotted rotors, and new pads, all from R1 Concepts, and total cost shipped (Amazon) was $56. Tax, delivery, shims, everything but silicone grease.
R1 concepts are fine not the best.
Rotors for my 25 year old car with a discount cost like 50 eur per set and they not the worst ones, but something known like TRW.
On the way back it started shuttering bad while breaking, especially down hill. I took it back to the place that did the brakes and they said front rotors were overheated. The parts are TRW (pads and rotors).
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Brake discs Zimmermann or POWER STOP
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If choosing brake discs across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare brake discs across these categories:
In March 2026 on PartReview, brake discs R1 Concepts were overall better than TRW.
In March 2026 on PartReview, brake discs R1 Concepts were overall more popular than TRW.
By vote balance, brake discs R1 Concepts surpassed TRW:
By number of reviews, brake discs R1 Concepts surpassed TRW:
In March 2026, according to PartReview, brake discs R1 Concepts led more car-specific ratings than TRW:
R1 Concepts are chosen by owners of cars such as: Ford Focus, and others.
Brake discs TRW have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of brake discs TRW with: Zimmermann, POWER STOP, Brembo, Centric, STOPTECH, OEM Volkswagen, EBC, Raybestos, ATE, Bosch.
Also available: comparisons of brake discs R1 Concepts with: Zimmermann, POWER STOP, Brembo, Centric, STOPTECH, OEM Volkswagen, EBC, Raybestos, ATE, Bosch.
You can also see who is better among other brake discs manufacturers: Zimmermann or POWER STOP, Brembo or Zimmermann, Brembo or POWER STOP, Zimmermann or Centric, Zimmermann or STOPTECH.
