Final answer:
If a tire is under inflated, the only part that grips the road well is the outside edges of the tire.
Step-by-step explanation:
If a tire is under inflated, the only part that grips the road well is the outside edges of the tire. When a tire is properly inflated, the entire tread surface makes contact with the road, providing maximum grip.
When a tire is under inflated, the center of the tread collapses, causing the outside edges to make more contact with the road. This leads to uneven wear and reduced grip on the road surface.
Proper inflation of tires is important for optimal performance, safety, and fuel efficiency. Checking and maintaining the correct tire pressure is essential to ensure even wear and grip on the road.