I have two BWM TIS Disks.
One is for up to model year 2005 and one for up to 2008 and encompasses everything in the 2005 disk.
The TIS is worth it if you like to work on your own car. If you are the kind of person who does not know which end of a screwdriver to use and always take your car to the dealer, save your money.
If I have not done a certain procedure on the BMW, I study the TIS and it gets me into the ballpark to do just about anything I need to do. This was the way I figured out how to remove my SoftTop.
Just remember, the TIS is written for someone who already has some knowledge of cars and some mechanical ability. It will not show you the basics.
Plus, it has the torque specs that you need....
PVR, for you, the TIS would be worth the expense. I bought my 2005 version on Ebay for $15.00 US. I found the 2008 version on the internet and downloaded it.
Also, if you like to do any type of electrical work, the BMW WDS is a worthwhile tool also.....