Related Clues:

• Four for the road
• They're worn on a road trip
• Michelins or Pirellis
• Wearies
• Grows weary
• Auto mechanics rotate them
• Gets weary
• Two on a bicycle
• Loses steam
• Bridgestones or Michelins
• They thrive on inflation
• They're worn on road trips
• Turnpike rollers
• Road runners
• Bicycle wheels