MexicanFiestaST
Well-Known Member
- Joined
- Oct 26, 2020
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- 7
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- Location
- Canton, MI
- First Name
- Ed
- Vehicle(s)
- 2020 Mustang GT
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- #1
Question for you guys who swap between street and track pads without changing rotors(or just change pads frequently, eg @chedder wrote in one of his replies to another brake thread):
How do you bed in the new pads on the old rotor surface?
Background
In the old days, I would always turn drums when changing shoes, then I would turn rotors when changing pads. But it became nearly impossible to find a shop that would turn either, so I just changed rotors and pads together. I did this on many cars in our household in the past, and I bed them in each brake job. The point is, I always had a new brake surface for the pads.
NOW I have a Mustang GT PP1(6 piston Brembo fronts), owned it since new. I always inspect the pads when I rotate tires, and I think it's nearing time for new pads(looking like 3-4mm left, which I will measure more precisely when I do some work on the car Monday), but the rotors seem plenty thick(I will mic them to be sure on Monday). I can detect no vibration when braking, so I know the rotors are not thin enough to be warped. Assuming I'm correct about rotor thickness, I'm loath to buy new rotors just yet. But I know it may be impossible to find a machine shop that will turn them. That's why I want to know from the guys who often swap/replace pads without changing rotors how do you bed the brakes? Do you prep the rotors somehow? Or do you not touch them at all, just put on the pads and go?
How do you bed in the new pads on the old rotor surface?
Background
In the old days, I would always turn drums when changing shoes, then I would turn rotors when changing pads. But it became nearly impossible to find a shop that would turn either, so I just changed rotors and pads together. I did this on many cars in our household in the past, and I bed them in each brake job. The point is, I always had a new brake surface for the pads.
NOW I have a Mustang GT PP1(6 piston Brembo fronts), owned it since new. I always inspect the pads when I rotate tires, and I think it's nearing time for new pads(looking like 3-4mm left, which I will measure more precisely when I do some work on the car Monday), but the rotors seem plenty thick(I will mic them to be sure on Monday). I can detect no vibration when braking, so I know the rotors are not thin enough to be warped. Assuming I'm correct about rotor thickness, I'm loath to buy new rotors just yet. But I know it may be impossible to find a machine shop that will turn them. That's why I want to know from the guys who often swap/replace pads without changing rotors how do you bed the brakes? Do you prep the rotors somehow? Or do you not touch them at all, just put on the pads and go?
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