To be honest – whether or not you have new tyres doesn’t change the strategies you can do. It can only do that if some strategies are marginal (if, for example, a 2-stop could complete all but 3 of the race laps). Otherwise, really, it just changes the speed of your car while you’re doing the strategy.
In 2009 most teams just about pitted when they ran out (why pit any earlier?) It was an exact Science. In 2011/2012, that’s different – it just shows you who *might* have an advantage.
For example: (O/P = option/prime; U/N = used/new)
Rosberg had OU, ON, OU, PN, PN, PU in China. He still only used a 2 stop despite having 3 new sets of tyres.
Vettel had OU, OU, OU, PN, PU, PU in Bahrain. He still did 3 stops despite only having 1 new set.
The strategies will still be decided by the tyre management qualities of the car+driver package on the track, and the pace differential of each tyre.
Degradation is very difficult to measure without breaking a car apart. Wear is decidedly easier to measure. We don’t need data on that IMO – but at least they could tell us the range of tyres each driver has.
A driver with 6 new sets of old tyres, vs one who has 6 sets of new tyres, can both do the same strategy anyways. Back in