Sedans with less road noise

Noise can come from a number of different sources. Tyres, alignment, road surfaces etc. can all case this problem.

It is possible to do a lot of good, most of the time if you have a knowledgable shop. There are so many different possible sources I would not bother making any specific suggestions. If you want to try some DIY stuff, Take a look at a product, called Dyamat. It will not cost much and you can buy the stuff at a lot of different sources.

However without hearing the noise and having more experience than I have You can keep trying stuff until you are happy. Many auto parts stores have the stuff. But the best is a custom shop.

You also want to make sure that the noise is not a problem starting to fail. Again someone with experience is likely to be your best bet. There are many possible sources of the noise and using the right materials and design should help a lot.