the race showed how pirelli should just stick to 3 types of tires, especially if there are only 8 days of testing (4 of which were held in the snow)
the teams simply don't have the knowledge about the tires, and the red one is just crap altogether
that's also mercedes' problem... they're no faster than the pack, until they by accident manage to switch on the tires, and suddenly they're half a second faster than anyone can manage