Where can buses have recapped or regrooved tires?

The correct response indicates that recapped or regrooved tires are permitted anywhere except the front wheels. This aligns with safety regulations and industry standards, which emphasize the importance of maintaining optimal tire performance on vehicles, especially those that transport passengers.

The front wheels bear significant weight and handle the majority of steering and braking forces. Using recapped or regrooved tires on the front can compromise vehicle stability, handling, and stopping power. Therefore, safety guidelines restrict their use to ensure the driver's control and the passengers' safety.

In contrast, the restriction on using these tires on the front wheels is typically not present for the rear wheels, where the tires don't play as critical a role in steering and braking. This precaution helps mitigate any risks associated with tire integrity and vehicle performance.

Overall, this regulation aims to uphold safety standards in passenger transportation, ensuring that buses maintain reliable handling and braking characteristics.