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Sound insulation (whether that is a dampening product to reduce noise from vibration, or a sound blocking product), will not cure the problem of road noise. It will help with engine noise and other noises, such as those from other vehicles. In fact, I think this model comes with a windshield that insulates against road noise. The problem is the aspect ratio of the tires (height of the sidewall). The aspect ratio is 45. IMO, when the aspect ratio is less than 60, then ride comfort usually suffers and road noise increases. I have an Acura RSX, and have done extensive sound dampening and blocking but the road noise persists on roads that are not smooth (such as rubberized asphalt). By the way, the aspect ratio of the Acura's tires is 45 (this is the Type S model). On some roads my Dodge pickup is quieter. It has tires with an aspect ratio of 60. If you want quiet, you want Lexus, but no Lexus is going to have the handling characteristics of the Acura. No car can do everything, there are tradeoffs.Report it
Correction to my previous comment. I said "windshield that insulates against road noise". I meant instead wind noise.Report it
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