Related Clues:

• Car's quartet
• Ones pumped up for a race?
• Yokohama or Hankook products
• Tricycle trio
• Becomes weary and in need of rest
• Station wagon's wheels
• Loses stamina
• Levers on a piano
• Radials, e.g
• Auto shop buys
• Bikes have them
• Corvette quartet
• Set out on the highway?
• Wheel coverings
• Needs rejuvenating