CivicHoss
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I posted a question in the Track subforum about a shimmy/judder in the brake pedal after replacing rear rotor and pads. I got zero replies there so I believe the audience I need is here. Short answer, before you read through the original posts below from the Track subforum, is what I thought to be a rear worn caliper bushing or suspension issue turned out to be warped front rotors. Felt a shimmy in the brake pedal (and not the wheel!) and replaced rear rotors and pads. Shimmy still present hence my thought I must have broken something in the rear. On a whim, I had the front rotors turned and got new front pads in case the electric steering rack was not providing feedback to the wheel. Turns out that was correct. Just a heads up that the electric rack will hide issues with the front brakes, etc.
Also, AVOID O'Reilly's BrakeBest Select rotors and ceramic pads. My set did not last a year with an initial bedding done. I have never had to replace all four corners in under a year.
Original posts in sequence:
Last year I did a HPDE at Mid-Ohio with the 16 EX-T. It was awesome. I changed the brake fluid to a higher temp fluid prior to the track day but I did not change the pads. I was curious. Anyways, I put on a smoke show the second 20-minute session, did a relaxing drive the third, and skipped the fourth. Brake and rotors where toast! I should dig up the pictures around here somewhere. They tell an interesting story.
Anyways, I ended up replacing front and rear rotors and pads. I bedded them. Under a year later, I just got finished replacing the rear rotors and pads (plenty of life left on both) because of a bad judder felt in the brake pedal and not the steering wheel. The rear rotors showed signs of uneven wear/heating with pad outlines and different coloration at some locations around the disk. It was not a uniform looking surface even though it felt smooth. The fronts rotors / pads look fine.
Problem: I cannot get rid of the judder in the pedal with the new, third set of rotors and pads. I have swapped rotors left to right. Cannot get rid of it.
So my question - did I bake some rubber or other component that can manifest as a judder in the rear and it not be the rotors and pads? Calipers? The second set (after track) rears did show signs of uneven heating/wear with proper bedding. I don't want to mess up the current, third set, if I can solve the actual problem.
I should mention that I have not bedded the third set yet. I am hesitant to go through the process with the judder so forceful in the pedal. I also should mention that the rear, right shock is wet. My instructor kept telling me to "put it into the grass!" so I think I may have a blown shock. However, having had blown shocks before, it never manifested as a brake judder. Just trying to fill in some blanks.
Here are some pics of the rotors/pads after the track day. They made a hell of a racket the 130 mile trip home.
Final Post:
Turns out it was the front rotors and pads. The electrical assist steering rack must have been deadening the shimmy from the front wheels so it was not felt in the steering wheel. Had the rotors turned and purchased pads from the stealership and we are all set. Solid pedal feel now! By the way, ceramic pads and disks from O'Reilly's Auto store are crap. All four corners warped in less than a year and about 20k of highway driving. The name brand is "BrakeBest Select." Avoid them.
Also, AVOID O'Reilly's BrakeBest Select rotors and ceramic pads. My set did not last a year with an initial bedding done. I have never had to replace all four corners in under a year.
Original posts in sequence:
Last year I did a HPDE at Mid-Ohio with the 16 EX-T. It was awesome. I changed the brake fluid to a higher temp fluid prior to the track day but I did not change the pads. I was curious. Anyways, I put on a smoke show the second 20-minute session, did a relaxing drive the third, and skipped the fourth. Brake and rotors where toast! I should dig up the pictures around here somewhere. They tell an interesting story.
Anyways, I ended up replacing front and rear rotors and pads. I bedded them. Under a year later, I just got finished replacing the rear rotors and pads (plenty of life left on both) because of a bad judder felt in the brake pedal and not the steering wheel. The rear rotors showed signs of uneven wear/heating with pad outlines and different coloration at some locations around the disk. It was not a uniform looking surface even though it felt smooth. The fronts rotors / pads look fine.
Problem: I cannot get rid of the judder in the pedal with the new, third set of rotors and pads. I have swapped rotors left to right. Cannot get rid of it.
So my question - did I bake some rubber or other component that can manifest as a judder in the rear and it not be the rotors and pads? Calipers? The second set (after track) rears did show signs of uneven heating/wear with proper bedding. I don't want to mess up the current, third set, if I can solve the actual problem.
I should mention that I have not bedded the third set yet. I am hesitant to go through the process with the judder so forceful in the pedal. I also should mention that the rear, right shock is wet. My instructor kept telling me to "put it into the grass!" so I think I may have a blown shock. However, having had blown shocks before, it never manifested as a brake judder. Just trying to fill in some blanks.
Here are some pics of the rotors/pads after the track day. They made a hell of a racket the 130 mile trip home.
Final Post:
Turns out it was the front rotors and pads. The electrical assist steering rack must have been deadening the shimmy from the front wheels so it was not felt in the steering wheel. Had the rotors turned and purchased pads from the stealership and we are all set. Solid pedal feel now! By the way, ceramic pads and disks from O'Reilly's Auto store are crap. All four corners warped in less than a year and about 20k of highway driving. The name brand is "BrakeBest Select." Avoid them.
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