In his defense thread titles on this board are terrible, this thread is a classic case in point. People should be a bit more descriptive in their thread titles instead of being so ambiguous and nondescript. "cheapes[t] place" could mean a great many things, including where the cheapest place to buy a tire is.
If you're looking for a cheap tire, I'd try Google. Thats how i find most of my on-line deals.