I choose do try and make one of my 240's as comfortable and quiet as possible. While I had the carpet out for washing and some minor rust cleanup I deceided to install 36ft2 of Dynamat extreme. I did the doors, inside of rocker panels and added to existing soundproofing on the floors and tunnel area. Still need to do the trunk lid and hood. Overall I'm pleased with the results. The most noticable noise right now is the front tire noise which are 15"'s. I will eventually go with some of the quiet ride tires. Would 15" tires be noiser than 14"'s? I did the front suspension with poly bushings and like the results alot although that may be why the tire noise is more noticable. How will the ride suffer if I do the rear TAB's and torque rod bushings in poly as these bushings need replacing although I can't say I can tell much? How is the IPD quiet hood kit?
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