X5 4.8is trunk trim questions

[X5 Meister]

I'm not that familiar with the contents of the 4.8is trunk and hopefully someone can help me out. Here are my questions:
1. What size spare is included with the car?
2. Does the car come with a trunk tray? From the ETK it shows two different trays. (see attached picture)
3. The ETK specs that 2 of the trays are present? (My 2005 4.4i came with no such trays).
4. Any idea if one of the trays can be used in a 4.4i? (I like the idea of having some storage area under the trunk floor.)