Related Clues:

• Rim cover
• Improvised swing
• Bicycle's rubber part
• Michelin or Dunlop
• It can be balanced and biased simultaneously
• Freeway roller
• One of Goodrich's goods
• Inexpensive swing, perhaps
• Kind of tyre
• Bias-ply alternative
• Radial, for one
• It wears on you during a road trip
• Irish sign behind square leads to flag
• Get winded
• Thing in a trunk