Just as a fresher, the first two numbers are the week and the last two numbers are the year the tire was made. Several magazines have run articles about cage and bike tires' age codes and for both groups, they all reccomend never going past five years on any of them.
As for the front tire, I had the OEM mets go flat on me while riding at night in the rain on a twisty road. I slowed down due to darkness and the rain and didn't relize the tire was the cause of the wobble, I just thought it was due to road conditions. The Metz sidewalls are quite sturdy even if their tread doesn't last long.