• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


Minimum rotor thickness?

XuperXero

Active member
Messages
587
Likes
127
Location
Wuxi
#1
I'm actually surprised there's no brake specification thread here. I need to know minimum rotor thickness, developed the "lip" on all 4 of my rotors. Deciding to machine or replace them.
Anybody know? Thanks.
 


D1JL

7000 Post Club
Staff Member
Premium Account
U.S. Navy Veteran
Messages
7,892
Likes
4,131
Location
SFV, So.Cal.
#2
As it should always be on the edge of the rotor and it is because I looked.
Here is what the service manual says.


Front brake disc minimum thickness 0.827 in ( 21 mm)
Rear brake disc minimum thickness 0.354 in ( 9 mm)




Dave
 


Messages
322
Likes
49
Location
Grand Rapids
#3
Machining is a lesson in diminishing returns... Why not replace them? Rotors are $200.00 all-in for this car. Spend the $80.00 to machine them and get maybe another 3K-4K miles before they warp again. It's your money and your choice, but machining is never an option for me.
 


OP
XuperXero

XuperXero

Active member
Messages
587
Likes
127
Location
Wuxi
Thread Starter #4
As it should always be on the edge of the rotor and it is because I looked.
Here is what the service manual says.


Front brake disc minimum thickness 0.827 in ( 21 mm)
Rear brake disc minimum thickness 0.354 in ( 9 mm)




Dave
Thank you!

Strangely enough... I know that it's usually marked on edge of rotor, I couldn't find it is why I made this thread in the first place...
 




Top