I recently installed Hawk HPS pads on the rear and there is still a grinding type sound like it did when the worn pads were there. Are the HPS pas normally noisy? The rotors are stock but were turned, do I need to replace the rotors maybe?

 

I've had Hawk HPS pads on a couple of different vehicles, including all four corners of our Subaru at the moment, and typically don't get any noise with them. The Hawk HP+ pads I've had in the past were a lot noisier and dustier than the HPS. Still running stock pads on my Mustang, but plans call for HPS all around in the near future. Were your HPS pads bedded in properly according to the instructions from Hawk?

 

No noise at all for me. But i think they are crappy pads. Dust too much and not much better stopping power

 

I have the HPS and have no noise. Like Ministang mentioned make sure you bed-in the pads properly.

1. After installing new brake pads, make 6 to 10 stops from approximately 30-35 mph applying moderate pressure.
2. Make an additional 2 to 3 hard stops from approximately 40 to 45 mph.
3. DO NOT DRAG BRAKES!
4. Allow 15 minutes for brake system to cool down.
5. After step 4 your new pads are ready for use.

 

On a side note, my 'special Bullitt' front pads came up in another thread how I haven't noticed any fade.

Another thing I've noticed is there's hardly any brake dust.
My brand X winter car makes a mess with its stock pads in comparison.

 

Maybe this is a stupid question but because I only had the rear pads installed at this time, does it hurt to run through the bedding process? I'm gonna have to do it again in a month when I have the fronts done btw.

 

You should be bedding pads any time you install a new set.

No noise on my HPS pads for street use.

 

^+1


http://www.tirerack.com/brakes/tech/....jsp?techid=85

 

I have them on the rear of my Cobalt SS/TC and no noise. I use them on the front of my Crown Vic and they squeal just a little. I used a lot of Permatex brake caliper grease on all the metal contact surfaces of the pads.

 

Thanks guys, I ran through the bedding procedure last night and they seemed better afterwards.

 

Yes, bedding in these pads is really important. Check the surface of your rotors for grooves, maybe you got some dirt on the pads when you put them in?

Also, did you replace the brake hardware clips along with the pads? I haven't done rears yet, but when I put HPS pads the front last weekend, one of the hardware clips that the pad slides on on the caliper bracket was broken, stopping the pad from sliding back after the piston retracts. A new bag of the clips was $12 and the pads slide much more freely now.

 

Yep, bedding them and using the brake pad grease is important. Use a thick layer of the special high temp Grease (Permatex Purple is good) anywhere the pad makes contact on the caliper/piston. This will help reduce/eliminate pad noise.

 

I'd have to disagree about the stopping power. Carbon-ferro pads require more pedal effort than stock pads when cold, so it may feel like they have less stopping power. But as they heat up, they grip harder and harder. You get used to how they feel when cold, and it quickly becomes a non-issue.

And no, I don't get any noise from them either.

 

HPS works fine for me cold, minimal dusting, and it is a light tan dust. I bought them knowing they may have cold stopping issues but they work about the same as OEM on my Crown Vic. They don't squeal like the other pads I've used, but it is important to use a lot of caliper grease on all contact points for the backing plates. I followed Hawk/Wellman's bedding procedure.