It may be the tires but I have the Michelin MXV4+ which are much quieter
than the original equipment Goodyears and between the road and engine noise,
the 300M cabin is much noisier than the Toyota Avalon cabin.


"Bill Putney" > wrote in message
...
> Steve wrote:
>
>> ...On the
>> down side the cabin noise is a little loud at higher speeds.
>
> Steve - that's probably the tires doing that (and maybe some wind noise -
> but mostly tires). There are some very good quiet tires.
>
> Bill Putney
> (To reply by e-mail, replace the last letter of the alphabet in my
> adddress with the letter 'x')