Earlier performed studies that show that a drop in tyre pressure by a few PSI may result in the reduction of mileage, tyre life, safety, and vehicle performance. Self-inflating tyre system ensures that tyres are properly inflated at all times. With the increasing prices of oil and growing concern of environmental issues, this system addresses a potential improvement in gas mileage. Thus in this paper, we reviewed the all available self-inflating tyre systems that are used nowadays in commercial vehicles.