Recently I installed Project Mu HC+ pads on my 08 s2000 with 51k miles keeping the stock rotors. Bedded in the brakes in and everythings been fine since installation. They squeak, but that is to be expected. However, today driving home from work when coming to a complete stop I hear almost a grinding noise from the front driver side and a vibration in the pedal. This vibration is not felt when braking under normal driving circumstances. Only when coming to a complete stop.

When I do drive the car it's usually in a spirited fashion with heavy braking. Therefore, could I have warped my rotors already? If so, what rotors would you recommend for a mostly street car for spirited driving?


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You sure everything is torqued correctly?

And that the dust shield isn't rubbing on the rotor?

 

Followed DIYGuys video for the installation and torqued everything to spec. Will have to check the dust shield in the morning, but everything was fine for over a week till today.

 

Any chance you got the brakes wet and then set the parking brake? Like...washed the car and then set the brake?

Is the noise a rythmic grinding that sounds like it paces the rotor rotation? or is it constant?

Is there a reason you bought such agressive brake pads? They're liable to make slight groaning or grinding noises.

 

Is it possibly ABS engaging?
are your slide pins well greased and no sticking caliper?

 

Its also easy to over grease pins, which causes them to hydrolock and bind.

Too much grease results in similar symptoms as not enough, but happens sooner (not enough doesn't symptom until corrosion occurs).

 

Since I haven't seen or heard this grinding, my prediction should be taken with a grain of salt

The pulsing: Probably from your rear brakes. You clamped the parking brake during a rain storm or after a carwash or similar. Look for a residue spot in your rear rotors.

The "grinding": You bought agressive brakes which make noise.

I asked why you bought this type of brake pad to see how familiar you are with them. If you're brand new to all the above experiences, its going to seem like something is wrong.

If the noises bother you and you don't need a pad which can handle 800C, you can just go with stock AP2 pads or something sized correctly for your actual needs.

You can also have the car inspected.

 

Hmmm I think this might be the issue, for I did grease the pins pretty well when installing them. Also, I drove the car again today, and I would describe the noise as a mechanical whirling sound as I'm nearing a complete stop with vibration in the foot pedal at the end

 

I'm confident that pin over-greasing is not your issue

the caliper is pulling the pins away from each other when you apply brakes.

 

I wonder if your rotors are worn so that even with new brake pads, the sheet metal wear indicator is "singing."