Is this the factory tire?
When you replace it (I would suggest you do it soon) go for something better.
There are so called dual compound tires, which have a harder rubber area in the middle for longetivity, and softer compound on the sides for grip in corners. Please see this illustration:
Some of these tires are:
Michelin Powerpure SC or
Dunlop Scootsmart
Pirelli Diablo
etc.
Everyone has his/her preference,
I have the Michelin Powerpure SC both front and rear, and they're awesome. Even in ever raining England.
Heard the same about the Dunlop scootsmarts.