real_supersnake Posted January 19, 2016 Report Share Posted January 19, 2016 So after some great track time in 2015, it seems I warped one of my front rotors on my '13 SS. I have the 14" Wilwood rotors on the front, using the BP-20 compound brake pads. I spoke with Wilwood sales rep and he told me the rotors that SAI put on my SS have been discontinued because people are going away from the zinc coated rotors. He gave me the part number for a replaceable rotor. Here are the new part numbers he gave me: Old front: 160-8396 and 160-8397 New front: 160-8398 and 160-8399 Old rear: 160-8400 and 160-8401 New rear: 160-8403 and 160-8403 The new rotors have a more pure type of iron and carbon, and are only slotted NOT drilled. Sales rep says they will build up more heat than the old parts, and will wear out the BP-20 pads more often, but is a better product and will last longer, less likely to warp than the slotted/drilled rotors. I ordered a set of the new front rotors from Summit Racing, cost of $264 each and some new pads, $100 for the front set. I will update the thread once I get them installed and tested out. Quote Link to comment Share on other sites More sharing options...
KB12 Cobra Posted April 7, 2016 Report Share Posted April 7, 2016 Wow, other than the new rotors lasting longer I don't see how the new slotted rotors are better than the older slotted/drilled rotors, especially at dissipating heat. The new rotors have a more pure type of iron and carbon, and are only slotted NOT drilled. Sales rep says they will build up more heat than the old parts, and will wear out the BP-20 pads more often, but is a better product and will last longer, less likely to warp than the slotted/drilled rotors. I ordered a set of the new front rotors from Summit Racing, cost of $264 each and some new pads, $100 for the front set. I will update the thread once I get them installed and tested out. Quote Link to comment Share on other sites More sharing options...
sheppd01 Posted April 8, 2016 Report Share Posted April 8, 2016 I was told by a guy who tracks his car almost weekly never put drilled rotors on your car. They will cool down unevenly and warp. He also said never use your parking brake after a few laps on the track. That will also cause the rotors to warp. I don't know if that is true but I have followed his advice and have never had a problem. Quote Link to comment Share on other sites More sharing options...
2shelbys Posted April 8, 2016 Report Share Posted April 8, 2016 drilled rotors are known to crack with track use. Quote Link to comment Share on other sites More sharing options...
jaydub2k Posted August 26, 2016 Report Share Posted August 26, 2016 Thank you for the heads up on the Wilwood rotors f2! Agree that drilled rotors are not great for track day. When I called Wilwood to confirm the replacement rotors for my 2012 SS Wilwood kits, they suggested the following directional vane rotors: front 16-8398/99 rear 160-12961/62 These are carbon iron, silver cadmium plated. I will replace the Wilwood street pads with Raybestos ST-43. Quote Link to comment Share on other sites More sharing options...
real_supersnake Posted August 26, 2016 Author Report Share Posted August 26, 2016 These are carbon iron, silver cadmium plated. I will replace the Wilwood street pads with Raybestos ST-43. I hear good things about Raybestos. They create rotor dust instead of brake dust. Quote Link to comment Share on other sites More sharing options...
Fat Boss Posted August 26, 2016 Report Share Posted August 26, 2016 I hear good things about Raybestos. They create rotor dust instead of brake dust. The ST-43's are amazing on the track. But, you'll hate the squeal on the street. Quote Link to comment Share on other sites More sharing options...
jaydub2k Posted August 27, 2016 Report Share Posted August 27, 2016 As long as my front wheels aren't filthy after a track day and I have a little less brake fade through the turns I'll be back with an update in September - Thanks! Quote Link to comment Share on other sites More sharing options...
jaydub2k Posted January 15, 2017 Report Share Posted January 15, 2017 (edited) Happy New Year! The replacement Wilwood Rotor part numbers provided by f2redpot in January of 2016 are accurate; I received inaccurate part numbers when I called Wilwood. Lesson learned; always call twice to make sure you have the correct part numbers before ordering. I also installed BP-20 pads for a street-track hybrid, and will save the ST-43's for later this year when I have my new scissor lift installed to make wheel and pad swaps a bit easier for track day. By the time I had the new rotors and pads installed, 2016 track season ended so I am ready for spring!I read some hilarious stories of the noise created by ST-43s when cold in some other forums, including one car being black flagged from a track day. A friend also reported rotor problems with his 2008 SS Baer package; drilled and slotted looks good but doesn't appear to last.Cheers and thanks! Edited January 15, 2017 by jaydub2k Quote Link to comment Share on other sites More sharing options...
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