Stability Factor ($K = \frac{F_w \times W_b}{P \times h}$):

Where:

• $K$ is the stability factor, with a minimum value of 1.25.
• $F_w$ is the static front end weight, in kg.
• $W_b$ is the wheel base.
• $P$ is the maximum drawbar pull parallel to the ground, in kg.
• $h$ is the height of the static line of pull perpendicular to the ground.