I bought my first set of these about 1500 miles ago. They are great. Very nice riding tires.

I've noticed that the rear now has a very pronounced flat spot. I suppose this is natural, but wondering if 1500 miles is a normal time for this to appear and really, it's been there longer (i.e. less mileage). Front is still roundish. Is it good to rotate them or not so good to have a flat tire on the front?

What I'm thinking is when the back is totally gone I can move the front to the back and put a new one on the front.