262mm Front brake rotors/Disc - To Machine or Buy new?

[Sexc86]

Hey guys
Pretty much as topic states. Got A 96 Ek1 with 262mm Front brakes. They are starting to squeel quite bad (when the car is moving and brakes not applied) and not sure weather to have them machined or to purchase some new ones.

Aproximately.

Rotor thickness - 21mm
Rotor outside wear lip - 1mm each side
Actually rotor thickness on brake pads - 19mm

Any help would be much appreciated

Regards Lyle

[saikou27]

if the rotors are not already at minimum thickness then just get them machined

[Sexc86]

how do i know what the minimum thickness is?

[riruiz_88]

its usually ~3mm from original thickness when new. thats what it says on the workshop manual im pretty sure

[91type-r]

it will be stamped on the outside of the discs where the cooling vanes are.
if they are close to the minimum already would mean that you need new rotors as they probably wont clean up at the minimum thickness.

[Sexc86]

thats what i thought.

just found out from dba stardard thickness is 23mm. minimum is 19mm.

looks like new rotors are in order

[91type-r]

i have some barely used ones from my da9 that i fitted and then changed to slotted rotors. will sell them to ya for $100. not sure if they are compatible, would need to check the centre hub sizes.

[sw1fty]

they wouldnt take 2mm off when they machine them, only a fraction of a mm... doubt you would need new ones if they are at 21mm now