Related Clues:

• Spare thing in a trunk
• Body shop item
• Swing improvisation?
• Begin to give out
• Become frazzled
• Begin to flag
• Part of American car — exhaust?
• Bridgestone circle
• Become winded
• Pit crew item
• Get exhausted
• One may be studded
• Bridgestone buy
• Makeshift backyard swing
• One of a rotated set