All four wheels of the Humvee are outfitted with disk brakes. The disk brakes are mounted inboard to the wheels outside of each differential. The reason that disk brakes make this list of Humvee facts is that compared to rim brakes, disk brakes have a much higher stopping power or braking power. Which, when you’re dealing with such a force as a Humvee, you need all the braking power you can get!