Why Is There Sponge Inside Tires?
2 Answers
The sponge inside tires is called "internal soundproofing foam," which helps reduce resonance noise generated during driving, with the most noticeable effect being the reduction of road noise. Here are some car tire maintenance methods: 1. Monthly tire pressure check: Under-inflation or over-inflation can lead to abnormal tire wear, shorten tire lifespan, increase fuel consumption, and even raise the risk of a blowout. Tire experts recommend checking tire pressure once a month to ensure it is at the correct level. The check must be done when the tires are cool, using a tire pressure gauge or a Tire Pressure Monitoring System (TPMS). The vehicle's manual will list the standard tire pressure for various load conditions. 2. Tire inspection: Regularly inspect the tread wear of the tires. If uneven wear is detected, check for cracks, cuts, bulges, or other damage on the tread and sidewalls, and promptly identify and address the cause. Also, observe the tire wear limit indicator, which is located within the tread pattern. If the wear is close to the limit, the tires should be replaced immediately. Regular tire rotation is also essential. Due to varying vehicle loads and road conditions, the four tires on a car wear unevenly. Therefore, after driving around ten thousand kilometers, it's important to rotate the tires. 3. Control driving speed: In cold winter months, if restarting after parking, since the tires are stiffer, it's necessary to drive at a lower speed for a while before resuming normal speed. Of course, the most crucial aspect of safe winter driving is controlling speed. Especially when driving on highways, pay attention to speed control, avoid sudden acceleration or braking, to ensure safety and effectively protect your vehicle and tires during the cold season, thereby avoiding traffic accidents.
I've been driving for over a decade and particularly care about tire noise during long trips. This sponge is professionally called sound-absorbing foam, which is a special material attached to the inner wall of the tire. When the tire rolls, the internal air creates resonant noise, especially noticeable at higher speeds. The foam absorbs these buzzing sounds, making the car much quieter—similar to how soundproofing foam works when applied to walls. Many new energy vehicles now use these quiet tires because without engine noise, tire noise becomes particularly noticeable. Additionally, it doesn't affect the tire's grip or heat dissipation performance. However, when repairing such tires, it's essential to find a professional technician, as regular tire repair shops might damage this material. This design is quite clever, ensuring both safety and improved comfort.
