Key sections of the circuit
Eau Rouge (2,3) is the most famous corner, but nowadays it's not as challenging as it used to be in the past. In the dry, we drive through it without lifting the accelerator, so as we do it in Blanchimont (16) in the 3rd sector of the circuit. This year we have even more downforce which means that nailing these turns should be even easier. However, when it's raining or when you drive with a full tank in the first phase of the race, these two corners would still be quite difficult for the drivers.
Anyway, these turns taken with a gas pedal fully pressed mean that we're constantly accelerating through two quite lengthy parts of the track. This fact should be considered when setting up the car, as you should make an accent on high top speed but at the same time keep in mind that the most important sector of the circuit is the second one, where there are quite a few high-speed corners where downforce is vital.
A double-left Pouhon (10,11) corner is important, but the combination of the 8th and 9th turns located on the descent has, even more, influence on the lap time. It is a very technical section, where many lines are possible, and the perfect one is always changing depending on the conditions. There you should always be searching for the line with more grip.
Another key section of the track is the last chicane, the so-called Bus Stop (18,19). We're approaching it at max speed, and then there's a very heavy braking. You need to be careful not to lock the wheels and not to miss the apex there.