As a frequent driver, I've often wondered if low air in my tires affects my gas mileage. After doing some research, I found that under-inflated tires can indeed lead to poor fuel efficiency. This is because low tire pressure increases the rolling resistance of the tires, forcing the engine to work harder and consume more fuel. To improve gas mileage, it's crucial to maintain proper tire pressure as recommended by the vehicle's manufacturer. In conclusion, keeping our tires properly inflated not only saves us money on gas but also contributes to a safer and more environmentally friendly driving experience.