Please reply guys...I have new OEM pads to put on my Z, but I can't get my rotors machined because they're slotted and dotted. I was told that I will get screeching noise if I just slap new pads on old rotors. It sounds like my only choice is to get new rotors and pads. Correct? I'm definitely going to switch to just slotted rotors so I don't have to replace the rotors every time I need new pads.

 

Slotted and dimpled (or drilled) rotors can be difficult to turn on some milling machines. My question is: are you sure they need to be turned? As long as there are no deep scratches or grooves, you can probably use new pads with the existing rotors.

 

The slots and holes will catch the blade on the lathe and break it so nobody is going to turn them.

If there are no deep grooves use some scotch brite to rough up the surfaces, then bed the brakes in properly and you should be fine.

 

^^This.

But only AFTER checking the wear and runout. If you're out of spec than you have no choice but to just go get new ones.

Also note: Scotch brite works OK on low use rotors but sometimes it's not enough to break the glaze. You can use some 220 sandpaper to cut the glaze with some cross-hatching (go one direction, then across in x-pattern) then finish with the scotchbrite.

 

If you can feel it in your brake pedal, time to replace.

Just put on StopTec from Z1, very nice!

 

Get some EBC pads, specifically the Redstuff. All of their pads have an abrasive break-in coating which cleans all the old pad residue from used rotors. Works great.

 

Yes, I've heard that race pads can act as a lathe on rotors to help clean the rotor surface (when cold). Here is a tool that might also help if you want to scrub some pad material off -

http://www.summitracing.com/parts/br...FdgMgQodsXwA1w