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Join Date: Mar 2011
Location: Rochester, New York
Well, I'll believe you if you can provide a link to some test, some expert, or some brake company that says this.
I had a RD 400 that came with un drilled discs. I paid to have them drilled at a machine shop. I never heard any difference.
Sorry KM, drilled/slotted rotors do make a noise, usually a clicking sound which does fade after rotor is worn in. If you google " drilled rotor noise " you will find many concerns about the noise. The reason your rotors that you had drilled didn't make noise is because they do not have dimples. Manufactured slotted or drilled rotors have dimples which create the noise.
" Loud Pipes Risk Rights "
2001 Vulcan 750
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
Pic up coil mod done
All LED lighting
Upgraded Mosfet rectifier
Last edited by JM2001; 03-02-2012 at 12:07 AM.