I should have looked more closely at them; they weren't noticably
uneven and I'd say they looked like they had about 2/3 of the tread
left.  They were those tires you'll see in wet climates a lot- with a
large center groove, then the main tread grooves of the tire sort of
come out from the center groove at arcing diagonals.  Pretty
distinctive.

I don't remember the new S-60 FWD I drove having excessive road noise,
though I don't remember it being particularly quiet that way, either.
This had a significant "roar" to it- at least as much as my Toyota
Tundra pickup with BFG AT's, for instance.  I'd expect a sport sedan
to be much quieter.

-jeff