Possible Glazed Pads After Track Day

[Jstang23]

Hey all I think I may have glazed my brake pads after an HPDE. I posted an update to the experience on another thread but to sum it up I went out there with the stock pads and fluid to see how it would do.

Anyways, I have now flushed the brake fluid twice and the brakes still do not feel as good as they did stock. There is about an inch of pedal travel before they actually engage. I know there is absolutely no air in the system, so I am beginning to think the pads might be the issue. I have not taken them off yet as its a pain for me to use jack stands, but I looked quickly and it looks like the pads are already half worn (7k miles on the car). The pads also take much longer to stop that usual. I am unsure if its glazed pads because the last time I glazed pads they squealed really bad and mine do not now. Any thoughts? Thanks!

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[Rodpwnz]

I don't have much to add since I don't mess with my brakes myself, I go to a shop for any brake work or check ups.

Have you inspected the rotors? You may be able to see pad smearing/material on the rotors to give you an idea as well.

 

[Flyhalf]

glazed pads are usually "hard pedal no brakes" feeling
The soft pedal is related most of the time to fluid.
Let me ask u.
U have pp1 or base?
Also do you have flush completely the fluid with a better one (dot4)?

 

[Optimum Performance]

Hey all I think I may have glazed my brake pads after an HPDE. I posted an update to the experience on another thread but to sum it up I went out there with the stock pads and fluid to see how it would do.

Anyways, I have now flushed the brake fluid twice and the brakes still do not feel as good as they did stock. There is about an inch of pedal travel before they actually engage. I know there is absolutely no air in the system, so I am beginning to think the pads might be the issue. I have not taken them off yet as its a pain for me to use jack stands, but I looked quickly and it looks like the pads are already half worn (7k miles on the car). The pads also take much longer to stop that usual. I am unsure if its glazed pads because the last time I glazed pads they squealed really bad and mine do not now. Any thoughts? Thanks!

Pictures of pads and rotors please?

 

[NightmareMoon]

glazed pads are usually "hard pedal no brakes" feeling
The soft pedal is related most of the time to fluid.
Let me ask u.
U have pp1 or base?
Also do you have flush completely the fluid with a better one (dot4)?

^ this. Glazed pads are usually a normal pedal but less brakes thing.

If the pedal is soft and moving a lot its usually fluid related.

 

[Sig556]

No one has mentioned the rotors. Are they glazed or warped? Do they have brake material transfer infused into the rotors? You already flushed the system If it were me, I would change the pads , the rotors, and the brake shims, and call it a day. But that is just me. Spending hours sanding the pads, skim cutting the rotors and you still have problems. Do it once, do it right and you are good to go.

 

[Optimum Performance]

No one has mentioned the rotors. Are they glazed or warped? Do they have brake material transfer infused into the rotors? You already flushed the system If it were me, I would change the pads , the rotors, and the brake shims, and call it a day. But that is just me. Spending hours sanding the pads, skim cutting the rotors and you still have problems. Do it once, do it right and you are good to go.

Literally an hour with some 80 grit sand paper and a can of brake clean (on the rotors ONLY) fixes this issue for less than $20.00. If the pads are shiny scuff them up as well. Throwing parts at it gets expensive and still not knowing if the issue is solved.

 

[Sig556]

Literally an hour with some 80 grit sand paper and a can of brake clean (on the rotors ONLY) fixes this issue for less than $20.00. If the pads are shiny scuff them up as well. Throwing parts at it gets expensive and still not knowing if the issue is solved.

I agree But if the rotors are warped due to heat that is time wasted. Just saying.

 

[nbjeeptj]

I was also thinking warped rotors or bad wheel bering assuming no air in line and good fluid. With either of these you will have the pads pushed into the caliper between press's on the brake and it will cause more brake pedal travel.

 

[1 old racer]

Just pull the wheels and remove the pads, Clean the rotors with brake cleaner and lightly scuff them with some 180 grit sand paper going different directions on both sides. Then give the pads a good sanding by placing the sand paper on a flat surface and take the pads and side them back and forth across the sandpaper til the glazing has been removed. That should do it

 

[AZlb5.0]

I agree But if the rotors are warped due to heat that is time wasted. Just saying.

True but warped rotors are easily felt. By either feedback from the break pedal or vibration under breaking. He didn’t mention that he feels a faded break pedal.

 

[Jstang23]

Thanks everyone for their responses! I am 100% certain there is no air in the system. I performed a bleed myself with some at home tools, then had it pressure bled twice at a shop. I inspected the pads and rotors and there was absolutely no indication of glazing or warping. I am fairly confident that my rubber brake lines are the cause of this. When I boiled my fluid its likely the rubber lines got some heat in them and now flex a little. I will be moving towards steel lines which should hopefully fix the issue! Cheers!

 

[Jstang23]

Sorry to resurrect a slightly old thread but I have an update!

So the brakes after about a week started to return closer to normal braking feel. I'm not exactly sure why or how this happened but obviously I was happy it did. I then ended up going on a 500 mile mountain run day where w did the Tail of the dragon 4 times without any traffic, the cherohala skyway, and hwy 28. I absolutely fried my brake fluid trying to keep up with a GT3 and a TTRS. I got home and performed a bleed twice and made sure all the air was out, but the brakes were still pretty squishy, like after the track day. So I went ahead and order Hawk HPS 5.0 pads and a nice set of SS lines. I had them installed last week and can say these are the best brakes I've ever felt. But more importantly, I got a chance to inspect the pads a little closer.

The front pads were actually fine! They had no cracks or any evidence of glazing whatsoever. The rears, however, was like looking at a shiny mirror. I've never seen pads so glazed before, lol. I was just shocked by this as I had no squealing. But also maybe this was the cause of the squishy pedal being that the fronts were fine and the rears were glazed?? Im not sure, maybe you all know something I don't here! Anyways cheers!

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