Final answer:
Smooth bore tankers are more difficult to drive because of their higher center of gravity, reduced traction, and limited control over braking and acceleration.
Step-by-step explanation:
Smooth bore tankers are more difficult to drive because they have a higher center of gravity and less traction compared to tankers with treaded tires. This can make them more prone to tipping over or skidding on wet or icy roads.
Additionally, smooth bore tankers have less control over their braking and acceleration. The lack of treads on the tires reduces friction and the ability to grip the road surface. This can make it more challenging to stop or speed up quickly, especially in emergency situations.
In summary, the difficulty in driving smooth bore tankers is primarily due to their higher center of gravity, reduced traction, and limited control over braking and acceleration.