What you are looking at here is an underlying incompatability between your car player and CDR's. Certain media types will play better, and you may also find that weird things like labels and markers also affect it. But the real problem is the player. Clean it, and try going back to the Ritek. Maxell is the best source for Ritek if you can't buy generic. TDK may be Ritek or CMC, Memorex could be anything. Your older Ritek may be the earlier "Ritek-G" (32x-40x) dye which is different from the current "Ritek-TG" (48x-52x) media.