Why do tractors have huge rear tires?
Show answer & explanation
Answer: Spread weight over larger area
Spread weight over larger area ✓ — Correct! Large rear tires distribute the tractor's weight over a greater surface area, reducing ground pressure. This prevents sinking into soft soil and minimizes soil compaction, which protects soil structure and crop yields.
Carry heavy loads of crops — Wrong. Tire size isn't primarily about load capacity. Large tires distribute weight to prevent sinking into soft soil, not to carry more cargo.
Drive faster on highways — Wrong. Large agricultural tires actually limit speed. They're designed for traction in fields, not highway speed.