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.
I did mine pretty early solely because the OEM rotors were wearing like a vinyl record. Both the pads and rotors still had plenty of material—it was just a bad wear pattern. I went to Girodisc pads and rotors and have had them on happily ever since.
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.
why not switch to 2 piece giro disc slotted rotors or ap racing j hooks
R1 concepts are fine not the best.
Rotors (Girodiscs 2pc) have already been confirmed to be seeing 1500F temps. Cracked annd needing replacement after 10-12 days on track.
Write your review
Help others - share your experience with this part.
Brake discs Zimmermann or POWER STOP
Brake discs Brembo or Zimmermann
Brake discs Brembo or POWER STOP
Brake discs Zimmermann or Centric
Brake discs Zimmermann or STOPTECH
Brake discs Zimmermann or OEM Volkswagen
Brake discs Zimmermann or EBC
Brake discs Zimmermann or Raybestos
Show allVoted AGAINST engine oil RAVENOL on the rating page
The brake pads OEM Alfa Romeo got the first review!
The brake caliper OEM BMW got the first review!
The brake pads OEM Infiniti got the first review!
For wiper blades PIAA already 100 reviews.
For battery Energizer already 25 reviews.
In the rating best water pump already 12 brands participate!
In the rating best timing belt already 13 brands participate!
In the rating best head gasket already 3 brands participate!
In the auto rating oil filter for Volkswagen Passat already 5 brands participate!
In the auto rating brake pads for Mazda 5 already 10 brands participate!
In the auto rating tires for Subaru Outback already 50 brands participate!
For cabin filter Fram already 25 reviews.
Voted AGAINST engine oil RED LINE on the rating page
Voted AGAINST engine oil PENNZOIL on the rating page
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 GiroDisc.
In March 2026 on PartReview, brake discs R1 Concepts were overall more popular than GiroDisc.
By vote balance, brake discs R1 Concepts surpassed GiroDisc:
By number of reviews, brake discs R1 Concepts surpassed GiroDisc:
In March 2026, according to PartReview, brake discs R1 Concepts led more car-specific ratings than GiroDisc:
R1 Concepts are chosen by owners of cars such as: Ford Focus, and others.
Brake discs GiroDisc 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 R1 Concepts with: Zimmermann, POWER STOP, Brembo, Centric, STOPTECH, OEM Volkswagen, EBC, Raybestos, ATE, Bosch.
Also available: comparisons of brake discs GiroDisc 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.
