Can you use 4X4 at over 80 km?

Yes, you can use 4x4 at speeds over 80 km/h, but it depends on the vehicle and the terrain. Most modern 4x4 systems are designed for on-road use, allowing for high-speed driving in 4WD mode. However, it's generally recommended to switch to 2WD on paved roads to improve fuel efficiency and handling. Always consult your vehicle's manual for specific guidelines regarding 4x4 usage.