NM
Easy tiger!
These next 2 tests will not be indicative of anything other than reliability. Mercedes will want to iron out the teething problems they have had so far, and that is the main purpose of these 2 tests.
You must remember the team have never run KERS before, and the packagin looks o be quite tight. On top of that they will be evaluating the rear wing, which according to my sources they havent even really tested much of yet.
Once the car can utilise all its systems, then they can go test tyres. Once Tyres are out the way they can bang in a few laptimes.