Related Clues:

• Walk, often lightly
• It may be worn on a sneaker
• Sneaker bottom
• Stair component
• Sneaker-sole surface
• Its gradual loss leads to baldness
• Piece between risers
• Shoe surface
• It gives a tire its grip
• It's worn while driving
• Firestone surface
• Auto-tire surface
• Walk or step
• Walk or step like pattern on tyre
• Grooves on tyre