What is the primary danger of driving a motorcycle through a patch of loose gravel or sand (gravilla o arena) on paved asphalt?

1. Gravel increases tire grip by 100%
2. Gravel acts like ball bearings beneath the tires, drastically reducing friction and causing instant front-wheel washout if the rider brakes or turns abruptly
3. Gravel will puncture all tires instantly
4. Gravel increases engine oil temperature