My HP+ pads rock in my TT caliper carrires too. To the point that they rattle when I go over bumps :banghead: but I don't have any funky wear issues and this is my second season with them. You sound like you need the Tyrolsport caliper guide pins/bushings. That is part of the problem they are supposed to fix.

Also, did you grind off any of the little nubs on the caliper side pads? I had grind off two of them so that the pad would sit flush on the caliper piston.

 

One side doing this, or both sides?

If one side, I'd say you have a sticking caliper. The Tyrolsport bushings may help this.

If both sides, then I'd say something systemic in the pad design, maybe like what Bill said with the nubs.

I think the primary wear issue that the Tyro bushings fix is when the pads wear at an angle (leading edge more than trailing edge) because of the movement allowed by the rubber bushings.

All that said - I never had any problem with my HP+ pads, and I didn't have to grind off any nubs. I don't know why the TT carriers would introduce any problems, since the caliper is the same.

 

Doh!

 

I talked to Hawk. The engineer (great guy named Frank) about popped a cork when I told him that I'd run a track day on the ceramic pads. "Who told you to use those?" On top of that comment, he's also run at Gingerman, and was familiar with the track enough to comment on the various corners and ask some specific questions about my experiences. Major props to Hawk for having people with track experience on board. That's big reinforcement for me for continuing to use their pads. He voiced additional concern about the probability of my calipers having spread, so now I have to look into that and possibly replace the calipers. Blech. This is becoming a damn expensive brake upgrade.

I'll leave the offending party out for the moment as I'm hoping they'll come up good with some relief on new (HP+) pads and I'd prefer not to bash them prematurely.

I should also note that the pads never faded. It was just the pedal feel that went to hell, along with, in all likelihood, my calipers. :hmmm:

 

Well, I've run several successful track days on HP+, and never had a problem. If you are going to be chastized for anything, it should be for running a track day with rubber bushings around your caliper guide pins. oke:

What's the deal about "spreading calipers?" Explain, please?

 

What's the deal about "spreading calipers?" Explain, please?

Caliper looks like /-\ instead of |-| , not a good thing. It has been known to happen under heavy brake use.

 

in the very least you should replace the rubber bushings...though if you're a serious track hound you might want to skip right to a boxter caliper upgrade.

 

rusty, im guessing the stress remains the same (or less as you said) but the heat loads created by tracking overloads the bushings making them softer. once the uneven pad wear starts, it can't be 'righted'. the solid bushings certainly would avoid this problem. :thumbup: