Which condition can cause tipping sideways due to a flat tyre?

• A. Seat belt fault
• B. Flat tyre
• C. Steering issue
• D. Worn forks

Answer: (B)

A forklift’s stability comes from even tyre support on all wheels. When a tyre is flat, its contact with the ground is reduced and the wheel can deform under load. That side of the truck carries less effective support, shifting the centre of gravity toward the flat tyre. With less support on one side, the forklift can lean and tip sideways, especially when turning or on uneven ground. This is why a flat tyre directly causes sideways tipping. Other faults affect safety in different ways (seat belt, steering, or forks) but don’t create the same sideways instability from a deflated tyre.