My 2006 CE suffers from a lot of road noise. There is a lot of coarse pavement in my area and at speeds over about 50 mph, the noise is transmitted from the tires into the body. It makes listening to the radio or carrying on a conversation difficult. When I drive onto a new patch of smooth asphalt, there is nearly dead silence!
I switched from the stock tires to Goodyear Comfortreds about two years ago and that helped slightly. Unfortunately the handling at the normal 35 psi was very sloppy so I keep them at 38-40 PSI. That restores good handling, but negates the noise reduction. Very frustrating.
The purpose of this post is to ask if there is any difference in the sound insulation if one buys a more expensive model of the Sienna. As mentioned above, mine is the base model CE.
Thanks for sharing your opinions,
PS: I plan to try the Yokohama Avid Touring S next summer. Right now I am running Bridgestone Blizzak snow tires and they are very quiet compared to the Goodyear Comfortreds. Obviously tire choice is very important for this issue.