Safety & Savings Safety Low air pressure causes erratic and uneven wear and is the number one cause of tire failures. A properly inflated tire will extend tire casing life, resulting in less overheating and fewer blowouts. Low tire pressures increase required braking distance and dramatically affects steering and handling. Savings Tires that run 10% under-inflated lose up to 16% of their tread life, resulting in tires wearing out sooner than they should. Tires that run under-inflated by 30% lose up to 10% in fuel economy, resulting in more frequent trips to the gas station. The average downtime on the highway due to a flat tire is 3-4 hours.