Hummer H1s are unique in the way they handle off road and in their interior arrangement. They are inherently very stable, thanks to their wide track. They can ford 30 inches of water and climb a 22-inch step.
Their stock ground clearance of 16 inches is made possible by tucking driveline components inside a channel in the central space between the left and right seats. They have high approach/departure angles of 72/37.5 degrees. Most H1s are equipped with a Central Tire Inflation System, which enables the driver to increase or decrease the tire air pressure.