Personally I think the tyres have made this the most enjoyable series in a great number of years. You need to account for the tyre performance to make everything work on race day!! Why should the tyres "not" be a major consideration in strategy?? It would seem all teams can get good performance out of them, but getting solid and consistent performance that is the hard part. The fact that at the we have had 7 winners from 8 events across 5 constructors is fantastic, but that's just my opinion.
To my mind, some of the best anecdotal evidence that the tyres are working well as part of the category and form only part of the larger equation for overall performance is that the fastest lap times are being set by various teams including Williams, Force India and Sauber at various stages through out the races and not only the top teams. So teams can get good performance over a narrow window, but getting them to last takes proper engineering and some forethought.
However, as you would expect, the spread of the ultimate fastest laps and the winners is a mix of the usual suspects and the new up and comers who are getting their head around the tyres at a similar speed to the established teams
Australia: FL - Button (McLaren) / W - Button (McLaren)
Malaysia: FL - Raikkonen (Lotus) / W - Alonso (Ferrari)
China: FL - Kobayashi (Sauber) / W - Rosberg (Mercedes)
Bahrain: FL - Vettel (Red Bull) /W - Vettel (Red Bull)
Spain: FL - Grosjean (Lotus) / W - Maldonado (Williams)
Monaco: FL - Perez (Sauber) / W - Webber (Red Bull)
Canada: FL - Vettel (Red Bull) / W - Hamilton (McLaren
Europe: FL - Rosberg (Mercedes) / W - Alonso (Ferrari)
Looking at the performances of Alonso in Malaysia and Valencia as well as Maldonado in Spain, this shows that the tyres maybe require a certain setup, suspension package and driver performance to get the best from them.
The recent years of super consistent tyres from Bridgestone effectively took strategy out of the equation and allowed a huge comparative advantage to those teams that had resources and experience to optimise them. Now its a new playing field and everyone is slowly sorting out the tyres. To my mind, Ferrari or more specifically Alonso and Red Bull seem to
have so far got the best measure of them.
Whether that is chassis setup, driver performance or even engine performance is the $64,000 question.
I had an interesting conversation with someone "in the business" over a pint and some dinner when I was in the UK recently. The conversation worked its way around to the Renault engine in the Lotus and Red Bull. It is known that the Renault is down on power likely has a better torque profile. I asked this person that, given the performance of the Lotus and Red Bulls and the characteristics of the Renault engine, whether that may help Lotus and Red Bull preserve and be easier on the rear tyres giving them a performance advantage. A long shot I thought. Their response was very interesting. They just smiled, nodding their head and said: "You would have thought so, wouldn't you!!"
We basically then worked through a Q&A where it was discussed that in a sport where you are consistently looking for hundredth's of a second per lap not only for one lap, but over a series of laps and with tyre life now such a big factor, an engines ability to deliver slightly better power and torque profiles that are easier on the tyre without sacrificing performance in other areas would definitely be an advantage.
Overall and IMHO, I love what Pirelli has done!!
Be careful to not feed the TROLLS and remember they are always hungry!!! :)