The phrase "extra axle" refers to an additional wheel or set of wheels on a vehicle. It is used to provide extra support and stability, especially for heavy loads or in challenging terrains. Full definition
The front suspension has Ram's Articulink system that has high movement joints and sway - bar disconnect that allows for extra axle movement during crawling maneuvers. (cheersandgears.com)
Stelvio chief engineer Andrea Zizak says his team has worked hard to achieve this glorious baritone wail, after modifying the powerplant to make it all fit under the Quadrifoglio's aluminium hood with a differential and a couple of extra axles underneath. (autofile.ca)
We can't imagine adding weight, complexity, and an extra axle improves those figures, meaning this AMG G - wagen might just be best suited for clients that own an oil field (or seven). (automobilemag.com)