New Ferodo Brake Pads Feel Sticky

[kodyo]

I changed my OEM pads with Ferodo DS2500 pads and went ahead and replaced rotors at the same time with Centric Plain rotors (OEM equivalent).

Here's the problem, they feel like they are engaging slightly even when I'm not braking, especially when the brakes warm up a bit after heavy braking. Which I noticed during the bedding process.

Is this normal when going from OEM pads to something more aggressive? Could it be that I didn't bleed the brakes correctly (brakes do feel and stop as expected)?

Edit:FYI, brake fluid was swapped to ATE Typ 200

[mav1178]

most FSM will have a procedure to check/diagnose a sticking caliper. Brake pads have some drag but you should be able to turn the wheel easily when it is off the ground.

What makes you think it's sticking? Just because it doesn't roll as easily from a stop doesn't mean it's sticking.

-alex

[kodyo]

Originally Posted by mav1178

What makes you think it's sticking? Just because it doesn't roll as easily from a stop doesn't mean it's sticking.

-alex

The car not rolling as easily from a stop was really the main thing I noticed, especially after the brakes heated up. At one point it was enough to stop the car from a slow speed.

Do you think it's worth removing the grated shim (there are two shims for the front pads), and adding even more grease to the slider pins? I say remove a shim as I found a thread about some pads being too thick at first and this was their solution.

I'll dig around in the FSM and see if I can find some diagnostic info, thanks!

[wparsons]

I would try greasing the edge of the pads where it touches the shims/calipers lightly.

I'm on my second of DS2500's and haven't found any stickiness.

[mav1178]

too much shims and you're essentially applying artificial pressure on the pads, causing drag.

If you can't rotate the wheels easily when they are off the ground, you should figure out if it's the calipers or the shims causing the drag.
If you can turn the wheels easily, then it's something else on your car or a figment of your imagination...

-alex

[mav1178]

I completely forgot, some pads may be slightly thicker than stock when new. It's a bit too late now, but it does happen.

no way to get around it other than to run without shims for a bit. But this is just a theory...

-alex

[Poodles]

Originally Posted by kodyo

The car not rolling as easily from a stop was really the main thing I noticed, especially after the brakes heated up. At one point it was enough to stop the car from a slow speed.

Do you think it's worth removing the grated shim (there are two shims for the front pads), and adding even more grease to the slider pins? I say remove a shim as I found a thread about some pads being too thick at first and this was their solution.

I'll dig around in the FSM and see if I can find some diagnostic info, thanks!

Stacked shims? That doesn't sound right. Also, over greasing the slides will just cause them to not work correctly.

[kodyo]

Originally Posted by Poodles

Stacked shims? That doesn't sound right. Also, over greasing the slides will just cause them to not work correctly.

The front brakes have two shims stock on the car. One is black with slots and the other is silver.

When I originally took the pins out and greased the pins, they came out pretty well greased from the factory.

About to trouble shoot now, will report back.

[kodyo]

Jacked up the car, all wheels spin freely at least while cold. Just a slight rub sound from the pads, which I imagine is normal. So maybe it's nothing. Thanks for the help everyone!

Edit: just drove it to heat up the brakes and then jacked it up and the wheel spin the same. Still feels "sticky", but I'm convinced now that it's just a new setup feel.

[Poodles]

Originally Posted by kodyo

The front brakes have two shims stock on the car. One is black with slots and the other is silver.

When I originally took the pins out and greased the pins, they came out pretty well greased from the factory.

About to trouble shoot now, will report back.

Ah, I forgot about that oddity. Usually if things are too thick, you simply can't get the caliper over the pads and rotor, so that's fine.


The factory slide bolts have ridges to hold quite a lot of grease, but some people go overboard and put too much to the point that they effectively hydrolock it. This doesn't allow the slide to go in all the way. Grease should always be replaced when the pads are serviced (it always astounds me that people don't get this).

Originally Posted by kodyo

Jacked up the car, all wheels spin freely at least while cold. Just a slight rub sound from the pads, which I imagine is normal. So maybe it's nothing. Thanks for the help everyone!

Edit: just drove it to heat up the brakes and then jacked it up and the wheel spin the same. Still feels "sticky", but I'm convinced now that it's just a new setup feel.

Could be air in the caliper or something, but I doubt that as you'd probably notice the spongy pedal. Could just be the nature of the pads.

[MasterOfMeh]

Did this ever go away for you? I am having a similar symptom and I am unsure if it is just a characteristic of the pad or not.

[Sapphireho]

I have same Ferodo pads for two years with no issue you describe whatsoever.

[+GT86+]

Still related to FERODO DS2500 brake pads, I've noticed that they don't have a metalic device like an "anti-blocking spring"riveted on it.

Is that ok ? The brake pads will not be frictioning "all the time" on the discs like that ?

Thanks for your help

[wparsons]

Originally Posted by +GT86+

Still related to FERODO DS2500 brake pads, I've noticed that they don't have a metalic device like an "anti-blocking spring"riveted on it.

Is that ok ? The brake pads will not be frictioning "all the time" on the discs like that ?

Thanks for your help

That spring is way too weak to actually move the pad, it's just there to minimize squeaks.