Which vehicle configuration is likely to off-track the most?

The vehicle configuration that is likely to off-track the most is a 5-axle tractor towing a 52-foot trailer. Off-tracking refers to the phenomenon where a vehicle, particularly a truck and trailer combination, does not follow the same path when turning as a single unit would. Instead, the rear wheels of the trailer track in a path that is shorter than that of the turning radius of the front wheels of the tractor, causing the trailer to swing outward.

In this scenario, several factors contribute to the off-tracking experienced by a 5-axle tractor towing a 52-foot trailer. First, the length of the trailer plays a significant role; a longer trailer has a larger overhang beyond the rear axles, which increases the degree of off-tracking during turns. The greater the length of the trailer, the more pronounced the off-tracking effect becomes because there is more distance for the rear of the trailer to travel around the turn compared to the front.

Additionally, 5-axle configurations usually have a higher weight capacity and may be utilized for heavier loads, which can also influence turning dynamics. The mechanics of turning, and the distribution of weight can result in more pronounced off-tracking as the vehicle maneuvers