Rotors are shot?

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Jul 16, 2013 | 06:06 AM

#11

bonky

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Joined: Oct 2012

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From: Dirty Jersey

Thanks for the advice everyone. Will definitely keep that in mind for my next track day.

Jul 16, 2013 | 07:00 AM

#12

robrob

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Joined: Jul 2005

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From: West Virginia

Quote:

Originally Posted by andrewhake

Just looks like nasty uneven pad deposits properly caused by swapping between pad compounds or too much variance in brake temps throughout the day. I would do some normal driving for awhile with the XP10s on to try and remove the deposits and then make sure to do a more thorough bed-in with the XP10s before the next time at the track.

I have found I need to do 2-3 cycles to build up a good transfer layer with track pads. A cycle usually being about 6-10 hard 60-5mph stops one after the other until I get some fade and let the pads cool back down while at cruising pace.

It can be difficult to maintain the transfer layer if you aren't using the brakes in a consistent way. Going really easy on the brakes most of the day with them below their optimal temperature will just cause the transfer layer to be eaten away by the high coefficient track pads. So doing that and then going into a session where you are extremely hard on the brakes could definitely cause weird deposits and even some vibration through the pedal if it is bad.

^ This.

Jul 16, 2013 | 08:14 AM

#13

JJ7

Joined: Jan 2011

Posts: 785

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I think the uneveness is from the rotor being a little more hot where the veins are as opposed to ABS. (Not that its really relevant)

Jul 16, 2013 | 11:55 AM

#14

almawa

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Joined: Aug 2012

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From: Gawgia

I had the same question as the OP...My rotors looked the same way, prob even a little worse with Hawk HP+ after a track day with lots of braking. I got some XP10 to try out, should I use new rotors w/new pads?

Jul 16, 2013 | 12:11 PM

#15

CKit

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Joined: Aug 2004

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Probably. But if you can street drive the XP10s for a week or two, it might clean off the rotor surface enough so you can bed the pads in the night before going to track.

Jul 16, 2013 | 08:33 PM

#16

andrewhake

Joined: Jan 2011

Posts: 5,651

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From: Mt. ________

Quote:

Originally Posted by JJ1

I think the uneveness is from the rotor being a little more hot where the veins are as opposed to ABS. (Not that its really relevant)

I agree.

On a different note but on this same topic.. It is definitely worth while to properly bed-in/burnish/re-bed your pads before going to the track or doing some spirited driving. The feel will be much better, remain more consistent, which makes it easier to keep the pads in their proper operating temps throughout the day, which means pad wear will likely be less as well. Also you shouldn't be getting any annoying pad squeak.