Looking to order the space saver spare tire from bimmerzone. I switched to non run flat tires and mine never came with a stock spare. After looking at the area under the cargo floor I noticed that there doesn't appear to be anyway to secure the spare to the floor(usually a center bolt with a large washer in most cars). Does the spare just sit there, and if so wouldn't it rattle around? Also I have the stock 20" M sport wheels, I believe I can use my factory lug nuts if I'm not mistaken?

I tried searching but didn't find anything, does anyone have any experience with the space saver spare?