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Old 04-08-2020, 09:03 PM   #1
Scooby Newbie
Member#: 513104
Join Date: Apr 2020
Chapter/Region: E. Canada
Location: Quebec
2017 STI

Default STI brake pads swap

I was planning to replace current OEM brake pads (sti 2017), at 5mm front and rear now, with Akebono performance ceramic pads.

My question is, can I simply swap the pads, without changing rotors? Currently on OEM rotors (41K).

And also, can I replace when they start making noise, around 2-3mm, or should I replace them now at 5mm preventively to reduce the risk of rotors damage?

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Old 04-09-2020, 07:51 AM   #2
Norm Peterson
Scooby Specialist
Member#: 498642
Join Date: Mar 2019
Chapter/Region: Tri-State
Location: our wrx IS the family sedan
'19 WRX Ltd 6M dgm
'08 Mustang GT (the toy)


For street duty, replacing pads at 5mm would throw at least a quarter of their service life/miles in the trash bin. So unless you have some other over-riding reason to swap pads, hold off a while. Worst case, the pads' wear indicators will start to lightly scrape on the rotors (to make the noise), but this won't damage the rotors.

When you do replace the pads, you'll still need to determine whether your rotors have sufficient thickness whether or not there is any light grooving or scoring that could be machined back to 'flat'.

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