I use the '01-'02 6cd changer head unit(Panasonic made I think?) and I have no problems whatsoever with CD-R's. Using memorex cd's and recording at full 48X speed. Mine also plays cd-rw's, something that should not be supported

The old HU I replaced had this problem with CD-R's. I seem to remember using imation brand, and burning at 4X and had some success I think.