Those underinflated tires could kill you.
A new government study warns as many as one in 20 crashes could be linked to tire-related problems.
The reports by the National Highway Traffic Safety Administration found that underinflated tires were the biggest problem.
A tire 25% below its rated pressure was found to be three times more likely to be involved in a crash.
Underinflated tires reduce a vehicle's stability and make it more difficult for a driver to maintain control during unexpected events.