Some interesting developments during Formula One practice in Bahrain.
Mercedes replaced the gearbox in Hamilton's car so he will be subject to a mandatory grid penalty.
At the same time, Ferrari avoided a grid penalty apparently because they are Ferrari.
"Kimi Raikkonen has escaped a grid penalty at the Bahrain Grand Prix despite his Formula 1 car being released with a loose wheel after a practice pit stop error.
The Finn set the pace in FP2 at the Sakhir circuit before stopping in the pits for a practice stop near the end of the session.
But a problem with the right front corner meant the wheel was not properly attached as he was released back out on to the track.
The FIA is strict when it comes to cars being allowed back on track with loose wheels in practice sessions - and the normal procedure is for a grid penalty to be imposed.
However, following a stewards hearing, it was decided that such a harsh sanction was not needed on this occasion because Ferrari had done everything possible to minimise the risks of the wheel coming off."
https://www.autosport.com/f1/news/135212/raikkonen-escapes-penalty-as-ferrari-is-fined
Vettel had loose bodywork when he came out in P3. The team blocked the view of the repairs in the garage. Vettel came back out and ran but went back to the garage where it appeared that the team was working on the board under the car which they also appeared to work on during the second practice session.
Qualifying will be interesting. Will Hamilton qualify on harder tires to try to make it a one stop race? The surface in Bahrain is fairly rough so it is anticipated to be a two stop race for cars starting on the softest available compound. They thought the same in Australia though and many cars, including the leaders, ran it in one stop. They could stop early and hope for a "timely" caution that brings out a safety car. Maybe a Force India car has a loose wheel.