15. Under-inflated tires
Not filling your tires properly might seem harmless but it actually takes a toll on your car over time. The damage is not limited to the tires but it spreads throughout the car’s systems. Under-inflated tires put extra work on your engine and will lead to poor fuel efficiency. The tires themselves also tend to wear unevenly. But that doesn’t mean you have to fill them to breaking point. An overfilled tire will have less traction on the road and the ride will feel bumpier. You won’t believe the next one is actually harmful.