I have attempted to burn "midnight club 3" and "gran turismo 4" but so far every copy have failed on my ps2. On gt4 I used 4x speed, all i got was the copy right menu. On Midnight club I got black...disc speed 1. Using TDK dvd+ dual layer disc, and every other game that doesn't use dual layer has worked fine.
Take a look at this here: http://forum.mininova.org/lofiversion/index.php?t234992155.html It probably has your answer. It says that +R media won't work, and that you should use some sort of patcher before burning.