Does my flat tire need to be replaced? Possible Duplicate:
  How do I know when to replace my tires?  




The surface of my rear tire has become flattened as opposed to its original convex shape.
I have about 2,000 miles on it.  "It" is a 23 Vittorio Rubino Pro.
Probably getting close. As you experience more flats than normal or really begin to notice the ledge of that tire corner when you lean into a curve its probably time. Some people wait till the fabric is showing, but i dont like the amount of flats that i start getting. 

2000 miles is a great life span for any tire, I say time for a new one.