The caliper pistons are extended further with worn pads. And stay extended. Pushing the brake pedal moves the piston the same distance on worn pads vs new pads each time you use brakes. Or am I wrong?
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Probably bleed the brakes… The new flat surface brake pads against a new flat surface rotor is now using 100% of the surfaces that are no longer glazed over, crystalized, warped, cracked or anything (to whatever degree) can/will give you better braking with less pedal effort making it feel like it has less pedal travel…
I did a pad slap on front brakes and pedal went to floor. Pushing fully extended pistons back into caliper somehow got air in system. No, I didn’t open bleeder as I retracted pistons. After subsequent bleeding, pedal was fine. I am almost positive I had air in rear line.
That sounds correct and was wondering the same thing why the brake pedal is higher after pad/rotor replacement???. It seems like in an ideal world as long as the pads and rotor remain within their acceptable thickness limits the brake pedal shouldn’t be any higher after they are replaced. So what could cause the higher pedal after pads/rotor replaced? Maybe …
- decreased rotor run-out.
- the distance, pad to rotor, is set by the brake-piston’s gasket/bushing , and that might not work quite as well as the piston extends.
If the rotors are vented and only require light surfacing I would clean them up and re-use them. I have been required to turn brand name rotors out of the box and feel sure the OE rotors would be preferred.
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