Heavy vehicle intended to draw machinery

A heavy vehicle having four mounted assemblies intended to tow a vehicle. According to the invention, the properties duvérifient the relationship: (I), .rho '. = .rho. / L, p being the vehicle turning radius and L is the wheelbase of the vehicle, .kappa., The proportion of the total vertical stiffness under the front axle relative to the sum of the total vertical stiffnesses under the front and rear axles of the vehicle, .delta., the relationship between the offset center of gravity forward and wheelbase, h ', the ratio of the height of the traction line from a ground forming a horizontal plane and the wheelbase of the vehicle, μ, the ratio between the longitudinal component of the resistance force applied by the towed vehicle, and vehicle weight.