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Like you, about the only thing I don't like about my C7 GS is the noise. It seems noisier than my C6 although the C6 is gone so there's no way to tell. I am running the Michelin Super Sport run flats that came on the car. I put Noico 80 mil butyl sound deadener topped with Frost King foam/foil insulation from the back of the car, over the fender wells and over the bulkhead to the floor of the passenger compartment. I didn't do the tunnel or the foot wells. Made a real difference and I can hear the radio now. Total cost was about $350 and two days of fighting with plastic.

[QUOTE="RDA, post: 212353, member: 4567"] Like you, about the only thing I don't like about my C7 GS is the noise. It seems noisier than my C6 although the C6 is gone so there's no way to tell. I am running the Michelin Super Sport run flats that came on the car. I put Noico 80 mil butyl sound deadener topped with Frost King foam/foil insulation from the back of the car, over the fender wells and over the bulkhead to the floor of the passenger compartment. I didn't do the tunnel or the foot wells. Made a real difference and I can hear the radio now. Total cost was about $350 and two days of fighting with plastic. [/QUOTE]

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