There is no way the stock tire carrier would hold the 37s so I took it off for now. I plan on getting new bumpers front and rear with a tire carrier and putting a spare on it then. There just aren't any bumpers I like on the market for under $1000.
I don't know why the center caps are spaced out so much....just the design of the wheel, I guess. I think it would be better if they sat a little closer to the wheel, but they aren't too bad.
PS...you probably saw my wife driving it....she is calling it "her jeep" now.