I have a set of used slotted front rotors that fit a 2004 sti. These came with a break package I bought a while ago. I ran then for 2,000 miles. There was a little wobble in them so out of trial an error I had them turned. After re-installing them they still wobbled a hair, so I ordered another set of rotors. Put those ones on and those wobbled a little to. After doing some reading, turns out that either A) the calipers are not braking even causing some shimmer in the pad or the "lightly used" pads I got were junk from the get go. I'm replacing the pads hopefully in the next week or two assuming that will fix the issue. if it does, that means these rotors should be just fine along with the other set I have now and the pads were bad all along, but I'm not 100% sure. Willing to give someone a deal at 100 bucks for both. let me know what you think and we can work something out.