Not sure which 'TIS' you bought on FleaBay, but mine is craaap :x Not worth the plastic it's printed on. It cost only 8...9 bucks but I think I was suckered by (eBay usderID) Victvator. There are other CD/DVD products on eBay. Can anyone recommend a good one: something that covers the electrical system, body/interior disassembly, etc???
You can guess from my userID that I long for the good ole days when you could buy a great workshop manual from Robert Bentley... unfortunately the E85/Z4 did not achieve sufficient volume for Bentley.
Glenn in Spartanburg, SC.... erstwhile home of Z4 production