Reading burnt CD's

[patang]

Hi,

I have made backup copies of Max Payne, RTCW and a few other games with my Acer 24x burner, they burn just fine but the weird thing is I cant install them with the burner, I get I/O error or corrupted files.
But the games install ok on my LG cd-rom.

This normal or am I doing something wrong?

Thanks