Is It Necessary to Do Soundproofing for the Chassis?
3 Answers
Soundproofing for the chassis is necessary. The sources of car noise and the main materials for chassis soundproofing: Sources of car noise: They can be roughly divided into the engine, tires, and external noises such as wind, horns, and various other sounds. Specifically, these noises come from the engine hood in front, the U-shaped water tank, the four doors, and the fenders. For owners with higher requirements, they may consider soundproofing the chassis, trunk, and even the roof. Main materials for chassis soundproofing: Butyl rubber vibration damping sheets; high-density EVA foam with adhesive backing (5cm thick); sound-absorbing cotton (with and without adhesive backing); high-density polyester fiber boards.
As a driver who frequently takes long-distance trips, I believe chassis sound insulation is definitely worth trying. Being on the road for extended periods, the road noise and vibrations transmitted through the chassis can become unbearable for the ears, leading to fatigue and affecting driving safety. New cars usually come with basic sound insulation, but older or budget vehicles tend to have particularly noticeable noise at high speeds. Adding sound insulation can significantly improve cabin quietness, making music and navigation clearer. Modification materials like soundproofing mats installed under the chassis may cost around one to two thousand yuan, but the comfort gained is worth it. By the way, regarding noise sources, the chassis is mainly responsible for road noise, while other noises like wind or engine noise can be addressed with door sound insulation—doing both yields better results. If budget allows, I would prioritize this upgrade.
I'm quite budget-conscious, so whether to do soundproofing for the chassis depends on whether it's worth the money. Not all cars need it. Simply put, if you only drive at low speeds in the city with minimal noise, don't bother. If noise becomes noticeable at high speeds, affecting your mood or music listening, you might consider it, but the cost is high with limited returns. It's more cost-effective to first switch to quiet tires or check for tire wear. Last time, I skipped chassis soundproofing and just changed the tires, which significantly reduced the noise. Think about it: necessity depends on personal needs. Commuters might find it more practical to save that money for other uses, while car modification enthusiasts can do as they please. After all, vehicle noise comes from multiple sources, and the chassis is just one part. It's okay to overlook this minor issue.
