Soldato
They need kers to work. Mclaren aren't that far behind so they need it. We all know how good Mclaren are updating there car so who knows if mid way down the season both are cars equal.
You don't need exact spec tyres to test test KERS
And are you forgetting Schumi pounding around in an old Ferrari running GP2 tyres?
Like Vettel did in Australia? Oh wait...
we don't know if Vettels was functioning at the start of China either, so that could be another win gone as well (it certainly wasn't working later in the race)
Maybe next year they'll ask Newey to design the car with everything in it...
Christian Horner has already said that Newey would not compromise the car for Kers so I expect it is having to be packaged in all sort of odd places and as such overheating. They need it to defend against DRS/kers and they need it at the start. So unless they can get 1/2 at qauli yin and make it to first corner first without kers then they need it.