That usually means they are overdriving the car: they want to win and they know they don't have the best car for it, so they take it to the limit trying to make up a bit of the disadvantage. Sometimes it pays out, but sometimes it costs a lot.
Lotus' drivers tend to screw Q3 laps, Don't like it.
I do usually prefer rational drivers, but I suppose the common sense says that, under certain circumstances, the only chance to win, even if it's remote, it's to attack. As long as they don't get hurt or crash with anybody else, I like it
Maybe I'm a bit overoptimistic, but the long runs is not what would worry me the most. I was worried about what really happened today: a driver that has to risk to the maximum with a car that's not perfectly set-up, and he has not driven that much, gets surprised and ends up in the gravel.
what worries is that Kimi hasn't done long runs, so there is no knowdledge how his tyres will last but Grosjean did good longer run yesterday althought it was with slower fuel load than Red Bull and McLaren had.
It's true, the set-up differences with Grosjean's car could be so unfortunate that they affect negatively the tyre degradation in Räikkönen's car, but let's not always think the worst