Sorry to bump up this thread but I was finally able to test out the spare tire after 2.5 years.
My wife had a flat on the rear right tire at work about 15 miles from home. The AAA guys fixed the spare and my wife got home last night without any issues. I took the car today to the tire shop to get a replacement.
Just wanted to commend Orient330 for his ingenuity. Tks mate. The E60 spare worked perfectly fine.