I'm still a newbie to this site, but having spent time in a number of other forums, there are certain things that are helpful in diagnosing problems.
More specific information about the vehicle is often beneficial, even though it is a FWD car. I don't know if all '99 SE 'tours had the spoiler or not, but that could be a factor, especially if it has come loose.
You indicate that the "tires checked out good" but tell us nothing about what tires are on there. Different brands of tires on different road surfaces can generate significant noise.
Hopefully you get my point that there are more components to the equation than you offered in your post.