These guys make great stuff and their customer service, if you need it, is exceptional. Only thing I put on my cars. My Mazda CX5 has drilled and slotted rotors, and my 13 C70 has slotted rotors. I will probably go with the Geo Carbons when my S60 needs them as I talked to a V60 owner that had them and he said those were the ones to get.
Absolutely normal. But I would still get one which is coated. My R1 Concepts from Rock Auto were completely black with a Zinc coating
I’ve got the R1 concept drilled/slotted rotors and ceramic pads, felt a decent difference from the OEM but my rotors and pads were at about 35% life so it makes sense that I’d feel a good difference. I do some spirited driving around town and the brakes perform pretty great.
After 160k miles, finally changed the brake rotors. Got the Bosch Quietcast rotors and paired it with the Bosch Quietcast brake pads. Was a pretty simple project, and would highly recommend! Haven’t heard a squeak or anything. Definitely “quiet.”
Bought my 2018 Stinger GT new - within a few months my steering would shake like it had warped rotors - and it wasnt always the case - it would be ok at times, then come back. I use Auto Hold a lot - and it seems that feature causes the shaking in the steering wheel the more I used it. I did talk with Kia about it and they dismissed it and said it was fine - after being sick and tired of the shaking I went and bought new rotors and pads from R1 Concepts and havent looked back - no issues at all since I installed them and I use Auto Hold every single day.
I recently went with Bosch branded discs and pads for an E46 330i M Sport. So far, so good.
R1 concept is what I use, with the drilled and slowed with there performance pads, works very good and at a low cost , plus the rotors look awesome on the car.
Been running r1 concepts slotted and drilled for a year on factory bbk. Highly recommend.
Bosch quiet cast rotors and akebono pads. Pros not alot of dust so wheels are pretty clean. Cons none so far.
Just replaced front rotors and pads with Bosch semi-metallics. After initial “bedding in”, including some sharp braking from speed and emergency stops from various speeds, I went on a long trip. Straight away, I noticed that whenever I start to apply the front brakes after a sustained period of acceleration, there is a single knock/pop sound that comes from around the front left of the vehicle.
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