You're going to have an obviously biased response to this which I'd hope you've realized, seeing as how you posted it in the "Tennessee Vols Football" forum on "Volnation". I'm sure if you found "Titansnation" or some deal like that they'd say Vols football isn't big.
But I've lived in Nashville my entire life - grew up in Mount Juliet, attended UT, and at the conclusion of this semester I'll be moving onto 1st Avenue in downtown Nash. Aka I am biased also, but I've lived here my entire life. I can confidently say that middle Tennessee, for the most part, is pro-Vol.
Mods feel free to move to proper forum if needed. But I think this is an interesting topic.
As everyone knows there is a group trying to get Peyton Manning to the Titans. I was discussing the idea on a Titans message board I frequent. A couple of posters on there are under the belief that UT football is not that big in Nashville. According to some of them, the Titans are numbero uno and the Vols are a distant second. Being from Nashville, I disagree. What say you fellow Middle Tennessee posters? West Tennesseans feel free to include your opinion as well.
I live in Gallatin. During the football season, people will talk about the Titans in a casual way. A greater number of people will passionately talk about the Vols and what will happen on Saturday. I think UT is still bigger team in the mid-state.