Mark Knecht wrote:
I've been using these same machine and same car CD player for years and everything has always been fine. Now for the last 2-3 months nearly 50% of what I copy fails.
Your recorder might be deteriorating (the laser in them doesn't live forever).
You might want to burn at slower speeds, probably 16x or even 8x. Don't go lower than that though, since on fast burners 6x and below result in bad burns again.
You might also be dealing with copy protected audio CDs. Do the copies play fine in other players other then the one in the car?