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Why Does He Do This?

Rock crawling Rock crawling is a highly technical category of off-roading. Vehicles are typically modified with larger than stock tires, suspension components that allow greater axle articulation, and changes in thedifferential gear ratio in order to provide the ideal high torque/low speed operation for traversing obstacles. It is common for a rock crawler to have a "spotter – an assistant who will go on foot alongside of or in front of the vehicle to provide information to the driver on obstacles or areas of terrain that the driver may be unable to see.

Mudding involves finding a large area of wet mud or clay and attempting to drive as far through it as possible without becoming stuck. The stock tires supplied with four by four vehicles are typically inadequate for this type of off-roading and Mud-terrain tires are required. Strongly attached recovery points are also recommended to enable the vehicle to be towed out if it becomes bogged down. Traction and momentum are important factors in success. This activity has a competitive form known as Mud bogging