Is Modifying Coilover Suspension Considered Illegal?
2 Answers
Modifying coilover suspension is not considered illegal. Here is an introduction to coilover suspension: 1. Introduction: Coilover suspension (Height-Adjustable Damper) - derived from racing technology, refers to shock absorbers with adjustable (spring) height design. To a certain extent, height-adjustable shock absorbers can be used to adjust the static weight distribution, including the driver and fuel load. 2. Purpose: From a practical perspective, if the goal is simply to lower the vehicle height and reduce body roll during cornering, simply replacing the springs with shorter and stiffer ones along with corresponding shock absorbers would be more hassle-free.
I've been into car modifications for a while now, and as for adjusting coilover suspensions, it's not automatically illegal, but it depends on local regulations. In China, traffic laws are quite strict. If you adjust it too low or too high, altering the original vehicle height beyond the permissible range of national standards, it could be deemed illegal modification. This may result in fines or even failing the annual inspection. I've seen some owners modify without filing the changes, only to be stopped and forced to revert, wasting money for nothing. Modifications can indeed enhance driving pleasure, but it's important to do it in moderation. Have it installed by a professional shop and avoid adjustments exceeding 30mm. After modification, it's best to register the changes with the vehicle management office to ensure legality. Safety is also crucial; setting the height too low risks scraping the undercarriage or instability, which is dangerous on highways, so don't just go for instant gratification.
