Baffled Aluminum Fuel Tank/Rear Subframe Rigity Enhancer

What Jeep Model are writing about? The BMW Space Saver Spare is $185... then I have to do a little fabrication for it to fit.

From what I have seen, most Jeeps that are 5 lug have the 4.5 pattern, as well as a bunch of the 5 lug Fords.
Mine specifically came off a Jeep Cherokee, and I got all four for 70 bucks off Craigslist. (15x8) with a 4.5 backspace.
That tells me the spares would also fit, but I use a standard tire and wheel and just deal with the bump under the trunk carpet.
Having a flat trunk floor isn't worth having to use a temp style wheel and tire to me. :D

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