It’s normal that the tires of a stroller show signs of wear when the stroller is used intensively, just as they would on a bicycle. This should not happen very soon though. But you can prevent this from happening. Make sure that all the tires are inflated equally (1.5 Bar). For a comfortable ride the tires should be inflated with equal and right pressure. Riding with tires that are not inflated enough will cause premature and abnormal wear of the tires. Additionally you will drive uncomfortably and strain your body too much.
Often a stroller is being overloaded with a second child or heavy groceries. This exceeds the maximum weight of the stroller and causes a quicker wear of the tires.