brake pad material?
10-01-2017, 02:58 PM
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brake pad material?
looking to do a brake job right this time, used vatozone brake pads a few years ago and warped my rotors, might have been the pads, might have been old rotors, not sure but am curious does anyone know what the oem pad are made of? semi metalic or cermaic?
I worked at oreillys for 3 years and heard numerous stories of putting cermaic on semi metallic rotors can cause more wear...
I worked at oreillys for 3 years and heard numerous stories of putting cermaic on semi metallic rotors can cause more wear...
10-01-2017, 04:34 PM
#2
Semi-metallic rotors, eh...
I don't know what Mazda pads are made of, but I wouldn't sweat it anyway, you're not racing on OEM-spec pads (hopefully). The differences, if any, will manifest themselves in what, 50,000 miles?
Choice of pad won't make any difference in the likelyhood of warping the rotors, but keep in mind that it's REAL hard to warp a rotor. In many cases uneven deposits of pad transfer material are misdiagnosed as warped rotors and instead of machining them, a simple bed-in procedure or a pass of sandpaper on the rotor could clean things up.
I don't know what Mazda pads are made of, but I wouldn't sweat it anyway, you're not racing on OEM-spec pads (hopefully). The differences, if any, will manifest themselves in what, 50,000 miles?
Choice of pad won't make any difference in the likelyhood of warping the rotors, but keep in mind that it's REAL hard to warp a rotor. In many cases uneven deposits of pad transfer material are misdiagnosed as warped rotors and instead of machining them, a simple bed-in procedure or a pass of sandpaper on the rotor could clean things up.
10-02-2017, 02:47 AM
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i didnt mean that they were made out of semi metallic, just that if they came stock with semi metallic pads if the rotors might behave differently with a diff material pad. ill try that but im pretty sure they are warped to hell, thanks
Last edited by 2004mazdarx8tx; 10-02-2017 at 02:49 AM.
10-02-2017, 07:44 AM
#4
Water Foul
There is almost no such thing as warped rotors. If you are in the 0.01% that has managed to warp a rotor, it most certainly was not the pads that did it. It was defective metallurgy in the rotors. As Loki said, if you have vibration in your brake pedal (and the tires have been ruled out), it is most likely due to an uneven transfer layer on one or more rotors. This can be corrected by bedding in the brake pads again, or, if they have a lot of miles on them, you might want to have them turned. "Warped rotors" is a myth used by brake shops and parts sellers to sell more rotors to the unsuspecting public.
[Aside: Several of us track our cars regularly and brutally abuse the brakes far beyond what you could hope to do on the street, and I don't remember any of us reporting a warped rotor. I am a member of my local track and drive with all kinds of loose nuts, and none of us have ever warped a rotor. Cracked? Yes. Warped? Never.]
OE pads have been both semi-metallic and ceramic. Ceramic pads are more picky about transfer layers on the rotors, which makes the bed in procedure critical to get right IME.
[Aside: Several of us track our cars regularly and brutally abuse the brakes far beyond what you could hope to do on the street, and I don't remember any of us reporting a warped rotor. I am a member of my local track and drive with all kinds of loose nuts, and none of us have ever warped a rotor. Cracked? Yes. Warped? Never.]
OE pads have been both semi-metallic and ceramic. Ceramic pads are more picky about transfer layers on the rotors, which makes the bed in procedure critical to get right IME.