Pull after pad & rotor swap

[jlucas]

Ok guys, this one has me stumped. I think I'm pretty much done with track days for this season, so I went and ahead and swapped my OE pads and rotors back on. These have only been used together as a set and never with any other pads. I have dedicated track pads & rotors.

Problem is now, when I first apply the brakes, the car tucks it's nose to the left front just a little before the braking evens out and it will track straight under the brakes. I went back through and did a brake bleed on all 4 corners again. No effect. It's almost like one of the calipers is operating on slight delay. None of this behavior was noticable before the pad & rotor swap. I would have certainly noticed it at the track because with quick brake application the front will tuck to the left by 6-12 inches. With slow brake application, it almost just feels like hitting a rut in the road while braking.

Anyone have any ideas of what it could be? Hopefully I'm not first one to have come across this.

[injuner]

If the system is properly bled, it could be a sticky caliper. How old are you calipers and how many track days have they seen?

[longdaddy]

I had OEM brakes do that after I beat up on them pretty hard at the track. New pads fixed that.

[speedpup]

check slide pin lube, rattle clips, are the pads tapered? You may have reversed a set of pads that are slightly tapered. How many miles have you driven it after the swap?

[UstaB-GS549]

This was also posted on the other forum.

Turned out that one pad had the backing plate hung up on the steel frame and the pistons bent the backing plate into a banana shape. Wierdest picture I have ever seen.

[jlucas]

I don't even know how it's possbile but the upper tang on the inboard pad of the right front caliper was hung up on the edge of the caliper carrier bracket. I'm still baffled on how this was could even happen. Thanks for everyone's suggestions.

[rpallas]

That's ugly..... Glad you got it worked out!

Bob