I've put more than 700 miles on my bike so far, a stock Specialized Allez with 700x23 slick tires. I weigh 235 lbs and am pretty religious about keeping my tire pressure 115 - 125 psi. However, I've noticed that my back tire (and to much less of an extent my front tire) is flattening out in the center of the tread.
Is this something to ignore, are my tires just cheap, or do I need to be running higher tire pressures/wider tires? I had a friend tell me that he tried running 130 psi in his 700x23 tires but they'd blow off his rim too easily when he attempted to do that.
I was thinking of switching to 700x25 tires once these wore out, but I doubt it would make that much of a difference when it comes to this issue.