What primary handling and safety hazard results from riding a motorcycle with significantly under-inflated tires (胎压严重不足)?

1. Sluggish steering response, severe tire overheating, rim damage, and risk of the tire bead separating from the rim (转向沉重、轮胎过热加剧、易脱圈或爆胎)
2. Excessive vehicle speed and loss of brake pad friction
3. The engine idle speed will drop to zero
4. The headlight bulb will burn out prematurely