Anchoring is a technique used to increase the friction between your truck and the surface of the ground. The most common way of increasing your anchorability is to apply ALL of its brakes. The same calculations for determining the resistance of a casualty apply to the winching source. By increasing the anchorability that your truck creates you’re able to anchor more weight.
Anchor Ability: The primary way to anchor a road vehicle is to apply all of its brakes.
Weight of tow truck multiplied by “Damage Resistance” 0.666 or 2/3 = total anchorability (when all of the brakes are applied)