Thanks everyone-I would have never thought to go through Costco, and the comments related to tires is a good one as well! We are in Wisconsin, also suffering through a winter that has had way too much snow.
I was sort of afraid that there might not be a lot of wiggle room, and that is what I was trying to figure out.
Not sure if I will break out of my Ford habit. But my Escape is in the 160,000 range, so it is time to start looking at something different. We've gotten very good at negotiating Ford vehicles throughout the years.