Brake discs R1 Concepts or Raybestos

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.

Got a 2017 lancer and did the R1 concepts. Good results after only the first two weeks. Mind you! I had two seized calipers in the back and had to replace those as well. What is stated about drilled rotors is true about the cracking if you’re using them aggressively, I bought these specific ones because I read they have the better rating out of most and since I’m using them in the winter I’m not concerned with them getting too hot to crack (please correct me if my logic is not correct) but I assumed that since the vehicle was primarily being used for cold weather it would be best to go with a more reputable brand for safe stopping power.

Look for rotors made from high-carbon iron. High carbon rotors are going to handle heat and resist cracking/warping better than normal grey-iron rotors. They don't have to be extremely expensive either.

Raysbestos Street Performance rotors are high carbon and probably available on Rockauto.

Got the R1 concepts for the rotors and pads. Impressed by the braking power

I have R1 Concept rotors with the Powerstop Z26. Great combo.

I upgraded our outback and ascent to the R1 concepts and haven't had any warping issues yet.

finally got r1 concepts put on about 5 days ago. drilled and slotted rotors. SMOOTH like butter

I used Raybestos rotors this last time, and they are OK, but they have a little vibration to them.

I have moved over to power stop as well. I've had problems with the Raybestos E3.