95jersey

I recently cracked one of my C6Z rotors at the BMW weekend (3 days) at NJMP. At the track in between sessions, I changed out the rotor with a spare I had brought. I went out to the next session and really didn't follow the bedding instructions like I should, and as the day progressed, I had a slight vibration under only the hardest braking zones. I usually bed my pads around my house stricly following the procedures before the event, but on the track, I was just not able to follow the bed in procedure as strictly as I normally would.

I am thinking the vibration is pad material put on the rotor unevenly due to the improper bedding. I hate to throw away a new rotor, is there anything that can be done to save the rotor? Will a few more sessions potentially clear the situation up? Can I try to rebed the pad on the street or have I done irreversible damage?

wallyman424

I've had this happen countless times. I usually just deal with the vibration until it becomes too much, then scrap the rotor. I have heard that you can take a scotch pad on an angle grinder to try and get the pad material off of the rotor, but have not tried it myself.

bowmanized

They sell 'cleaner' pads to scrape the excess material off and then you re install your race pads. However if you're running the stock rotors it may be cheaper to buy a new one.

gkmccready

Fit grit paper on an orbital sander is what I've always been told.

Until the Corvette I always ran Hawk Blues (on lighter cars) and they eat more rotor than pad typically so I've never had to deal with this issue personally.

Wayne O

I'm no expert but I have used a Scotch Brite pad (red color pad I believe) on my rotors. I wasn't getting a distinct vibration...only a strange, low frequency 'judder' noise. It turned out I had glazed my pads.

sleeper02Z06

Run it until the vibration is a problem, then toss it.

Joe