The life of the car chassis is equivalent to the car itself. Unlike other parts of the car that can be replaced for reasonable cost, the price of replacing an old chassis with a new one can reach a point where purchasing a new car is more cost-effective. This is especially true for older car models with parts like chassis having been phased out by the original manufacturers. A car owner can either scavenge for parts or have it custom-built. There are companies that manufacture custom-built parts with quality that are on par with the original manufacturer, albeit expensive.
Being able to extend the life of the chassis means extending the serviceable life of the car. One of the ways to avoid expensive chassis replacement is with the use of special springs combined with reinforcement.
The most battered sections of the chassis are those at the connection with suspension components. As the car accumulates mileage, the attachment points gradually weakens due to the stress caused by shocks and vibrations.
The special springs for car attaches to different parts of the chassis instead of the original attachment points. The area around the original attachment points are then reinforced to make up for the structural weakening caused by stress. By doing so, the life of the chassis and the car itself is extended without have to spend so much. This method is ideal for chassis that have been properly taken care of and protected against corrosion and wear.