Related Clues:

• Transportation, slangily
• Rotates
• Pair on a bike
• Bike shop stock
• Street contacts?
• They keep things rolling
• Needs a rest
• Belted wares
• Some swing seats
• They might squeal
• Dragster's slicks
• Is ready to rest
• Becomes weary
• The wheels on the bus, e.g.
• Saturn's four