Advanced silencing technology: significantly reduces the rolling noise up to 9 dB, improving acoustic comfort inside the passenger compartment.Professional application: the foam must be installed inside the tire, accustomed to the tread, after disassembly of the tire from the rim. Installation by a tire dealer or specialized operator is recommended. Our foam is designed to absorb vibrations inside the tyre and reduce the transmission of sound waves into the passenger compartment. The result? A quieter, more relaxing and pleasant drive — especially on electric or hybrid vehicles, where mechanical noise is already reduced and rolling is more noticeable. The foam is made from Industrial quality polyurethane foam, resistant to extreme temperatures, dynamic loads, humidity and dust. The technic.