The term 'Runs Out of Gas' can be broken down into two crossword solutions: TIRES (5 letters) and DIES (4 letters). TIRES refers to the rubber components of a vehicle that are inflated with air and provide traction and cushioning. DIES is a verb meaning to stop functioning, usually due to a lack of fuel or energy. Therefore, when a vehicle 'Runs Out of Gas, ' it means that it has used up all of its fuel and has stopped working.