Taper Tantrum (Brake wear)
 

Burned through a set of stock brake pads (steel brakes) in three and a half track days at high speed/moderate braking tracks (mostly Watkins Glen). Threshold braking and then trailing into most corners.

That in line with what you guys are seeing?

Pad was heavily tapered on the leading edge to the point the sensor didn't trip until the pad was worn down to the metal backing. I guess I should have flipped the pads after the second day.

Going with new stock rotors and RS29's.


https://cimg4.ibsrv.net/gimg/rennlis...63ed8c374d.jpg


https://cimg6.ibsrv.net/gimg/rennlis...f92ad1b0d8.jpg

That is crazy.

I ran RS29 at the Glen last week.

Hardly much wear in 2 days.

Yikes, that is some serious tapering. Stock pads supposedly taper and don't last (I took my stock pads out the next day after delivery). Pfc11 and ferodo ds1.11 pads have shown zero taper on my car so far.

This is what my PFC11 pads looked like after 8 track days. No taper:

http://s6.postimg.org/97uqrxy81/IMG_5406.jpg

The RS29's will definitely give you longer pad life. Heat is the enemy for the stock pads as once they get above the designed operating temperature the wear will accelerate quite a bit.

RS 29s will taper as well. You need to flip the pads half way.

Put those pads on eBay for log splitters. :thumbup:

That's incredible! You're running those over stock rotors?

How many days/hours of running are you getting before you flip and total? And how aggressive is your braking, Sam? Thx

Yup. Those were on stock rotors.
I'm currently running AP racing rotors with the ferodo pads. No taper either.

How thick were your rotors after the fact?

The rotor on the corner that saw the pad tapered down to metal was grooved as you'd expect so I replaced all four rotors.

The rotor thickness itself was fine and no significant cracking - I was actually quite impressed with the rotor.

The pad is the weak link in the stock setup after the fluid is replaced with track fluid it seems.

I had comparable taper on stock pads, which drove me bananas, and about half of this much taper on Endless NU5 pads. Will try Ferodos Joe mentioned now.

What's involved with flipping them? Just swap inboard and outboard sides?

yes

Lap times would help these brake wear assessments