Unlike other types of vehicles, tractor-transport units used in sloping farming have to work in extreme conditions, such as: steep slopes, long ascents and descents, off-road, road surface and various moisture and other obstacles. Due to the distribution of weight on the front and rear axles longitudinally, and on the upper and lower wheels of the slope in transverse directions, during which their rotation at equal speed is violated, drag increases and, accordingly, fuel consumption is increased as well. As we can see, there are a lot of problems in the conditions of sloping farming, and this directly concerns Georgia, as a typical representative of this direction. The leitmotif of the article is the influence of complex factors on the off-road of the tractor-transport unit when working in extreme conditions, and the theoretical bases for determining its profile, maneuverability and other types of off-road are presented.
Key words: traction-grip off-road; dragging, fuel expenses; trench.