Related Clues:

• Firestone features
• They're fit to be tied
• Sneaker bottoms
• Spikes
• Shoestrings
• Ties
• Loafer's lack
• Stair parts
• Radial surfaces
• Adds punch to punch?
• Makes more powerful?
• They leave tracks
• Puts one's foot down
• Field-goal kicker's bane
• Tie-ups