In F1 what is happening with Bridgestone tires during rain, I do not uderstand why their performance decrease?

Answer 1

Put it this way, Michael/Ferrari/Bridgestone package won the race. Therefore, the Bridgestone tyres did OK in the end.
The amount of water on the track surface at the time of qualifying and during the early part of the race suited the Michelins. On a drying track, Bridgestones were superior. Ofcourse, if it had kept on raining or if the track remained wet thorughout the race, then the Michelins would have won. But it didn't. The rain stayed away (until the final few laps), and the track kept drying up.
It's impossible to predict accurately how the tyre behaves over the course of a race, let alone how the track will change, let alone how the weather will change. It's all a bit of a lottery in a way. You just have to read the conditions well and respond appropriately at the right moment. And watch the weather forecast. Some big teams have meteorologists, mobile weather stations, and helicopters hovering around the race track with onboard weather station/radar to collect minute-by-minute weather conditions.

Answer 2

In a race of two one has to win for the other to loose and visa versa.

Here the Bridgestone tyres are a bit behind when it comes to wet strategy so the team which run no Bridgestone are a bit behind the Meclien ones, but nothing to worry, form next year every one will run slow because of Meclien will quit F1 because it is not happy with F1 loosing all its technology due to cost cutting plan and it has lost most of them.

F1 has become a bit boring due to the cost cutting strategy it has adapted for the poorer team.

Answer 3

Rain reduces friction (it acts like oil does to lubricate things) so all tires performance decreases when it rains.

Rain tires are very special. Their grooves are carefully designed to carry water away from the tire, and the rubber is carefully formulated to stick to wet pavement.

Michelin made their grooves and their rubber better than Bridgestone this week, for the specific track conditions during qualifying anyway..

Answer 4

Obviously the compounds used, and the construction of a Bridgestone rain tire/tyre isn't as suited to the conditions as that of Michelin.

Answer 5

If the accusations that they spray their tires with chemicals to alter the tires' spec, then maybe the chemicals are getting washed away off the tires and they lose grip.

But, getting serious, it's something about aquaplaning, plus maybe the channeling treads on the tires are not designed properly, which worsens the aquaplaning problem.