Solid axles are like "steel tough guys," their strength lies in their durability and robustness. For example, hardcore off-road vehicles like the Land Rover Defender and Ford Raptor use solid axles, easily handling complex road conditions. However, they also have disadvantages, such as more noticeable body roll when cornering, compromising comfort. Split axles, on the other hand, are like "nimble dancers," working in conjunction with independent suspension to achieve better handling and comfort. Models emphasizing handling, such as the BMW 3 Series and Mercedes-Benz C-Class, use split axles. However, their maintenance costs are typically about 30% higher than solid axles.
How have axle functions evolved?
With the development of automotive technology, the functions of axles have also continuously evolved. Common types now include steering axles, drive axles, steering-drive axles, and support axles. The steering axle is responsible for turning the wheels; long-wheelbase models like the Audi A6L can achieve U-turns thanks to the steering axle. The drive axle is responsible for transmitting power; the Porsche 911's ability to drift relies heavily on its rear differential. The steering drive axle is an "all-rounder," like the front axle of the four-wheel drive Q7, which can both steer and drive on icy and snowy roads. The support axle is more "low-key," mainly serving a load-bearing function, and is commonly found on the rear axle of trailers.
