slotted rotors/brake discs

Jason Stone jason_r_stone at
Wed Oct 11 06:27:11 EDT 2000

After installed slotted discs I seem to get a VERY
loud "groaning" noise when I brake hardish...

is this normal?

i know they are louder than non-grooved but how much?
or am i just paranoid?

thanks again

'91 Audi S2
'97 GSXR600

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