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UPDATE: I've been meaning to update this thread. I just came off a year-long hiatus from track days with the BRZ a few weeks ago at Road Atlanta. I installed a new set of Cobalt XR2's along with the newly released Velox Motorsports brake cooling kit. I used a Beastronix 86Nanny PD to engage the pedal dance with the push of a button every session. My pads and rotors wore evenly all weekend and upon inspection the uneven wear, severe rotor heat checking, pad crumbling and glazing that I had last season are not present. So in conclusion I would attribute my issues to lack of pedal dance and/or proper brake cooling. I'm still very happy with my BBK!!
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I've had my AP Sprint BBK installed since July 2013 and I've been noticing uneven wear on the pads and rotors since. The driver's side pads and rotors are wearing significantly faster than the passenger's side.
My car is tracked heavily and my first set of rotors have 8 track days on them and I believe they need to be replaced as of yesterday at Road Atlanta.
First set of CL RC6's that came with my kit lasted 5 full track days and the wear was uneven on the pads (driver's side more worn) and before the 5th track day I swapped the driver's side pads with the passenger's side and finished those off.
My second set of pads were Carbotech XP12's and I wasn't happy with those. They lasted 2.5 track days and they felt softer on the pedal since they aren't sintered and contain kevlar. Bite was great and they never faded, I just didn't like the feel compared to the sintered RC6's.
I removed the XP12's yesterday at Road Atlanta at lunch hour and installed fresh RC6's and finished my track day with much enjoyment aside from this perplexing uneven brake wear issue.
Here are the pics of my XP12's off the car and the rotors on the car. First is my driver's side rotor. The J Hooks are fading away and I can see cracks forming between the gaps in the hat. Deep groove around the outer edge of the rotor.
Driver's side XP12 pads. Note the bottom pad was on the inside.
Passenger's side rotor. J hooks still look okay and the grooves are less significant.
Passenger's side XP12 pads. They are worn significantly less and the slot in the middle is still visible.
Disclosures: I do not do the pedal dance prior to tracking my car; I do hold the button down to turn "everything" off. I instruct at every track day and I simply do not have time to fully warm up my car or remember/look up the sequence to do it. I am typically jumping out of my student's car and immediately into mine and taking 20 minute breaks every hour to rehydrate, use the restroom, track talk, etc. I am also running 911 GT3 brake air guides strapped to my control arms to direct air in the wheel wheels at speed to the inside face of the rotors to help keep rotor temperatures under control.
Help, advice and insight is much appreciated. I'm at my wits end.
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CSG Mike / @
JRitt / @
Racecomp Engineering / @
Reaper / @
buddy32
Please help me by tagging anyone else with the AP Sprint BBK