After drivers struggled to search out grip on the newly-resurfaced monitor final season, Pirelli went one step softer for this yr’s race, switching from the C1, C2, C3 mixture to the C2, C3 and C4.
Nonetheless, having made that alternative, Pirelli discovered that the characteristics of the track had been changed after the race promoter determined to water-blast it, a course of that has helped to generate extra grip.
Throughout Friday apply forward of the Turkish GP drivers suffered graining on the softs, and Isola believes that groups will now attempt to keep away from utilizing them within the race if they will.
Groups will in all probability solely have information gathered from FP1 and FP2 to plan their methods for qualifying, as Saturday’s FP3 session is prone to be moist, however their information gathering was made extra difficult by Friday’s altering wind ranges.
There may be additionally nonetheless an opportunity that qualifying itself might be moist, but when slicks are utilized in Q2, groups must make a name on whether or not to decide to beginning on the medium or gentle.
“I imagine that the gentle is kind of an aggressive alternative,” mentioned Isola. “Contemplate that after we chosen the tyres, the three compounds for this race, we weren’t conscious of this superficial remedy that they have been planning. So trying on the information from final yr, we determined to go one step softer.
“The gentle is kind of an aggressive alternative. And I imagine that some groups have been utilizing the gentle right this moment simply to eliminate them, and give attention to the medium and exhausting for the race, in the event that they need to plan a one-stop technique.”
Lance Stroll, Aston Martin AMR21
Photograph by: Glenn Dunbar / Motorsport Images
Though it’s common for the quickest drivers to attempt to undergo Q2 on the medium somewhat than the gentle, Isola believes that extra will try to take action this weekend, inspired by a comparatively small delta of 0.3-0.4s between the 2.
“I imagine that we’ll see greater than two or three automobiles making an attempt to qualify on the gentle, as a result of the delta lap time between the gentle and the medium could be very small.
“So it is not like one second, the place you are taking an enormous threat to undergo Q2 with a medium as a substitute of the gentle, with this small distinction, in all probability extra automobiles try to qualify on the medium compound.”
Isola confirmed that the remedy undertaken by the promoter had made a big distinction to grip ranges, as reported by drivers right this moment.
“The extent of grip elevated rather a lot. That is in all probability as a result of the truth that we do not have the bitumen on high, and to illustrate the stones are seen, and subsequently producing extra grip in comparison with final yr.
“The rise in grip is obvious, as a result of the lap occasions are 4 to 5 seconds faster than final yr. So I imagine that there is no such thing as a doubt on the rise the extent of grip.
“We have been anticipating some graining, and the graining is seen on all of the three compounds, particularly on the softer one, and particularly on the entrance proper. The graining on the within shoulder is accelerating the damage.
“And so will probably be essential for the staff to measure and analyse the information from FP2 to know what’s the put on lifetime of the tyres, as a result of that is data that we do not have from final yr, final yr, as each quali and the race have been moist.
“As I mentioned that tarmac was utterly completely different in comparison with this yr. And we have been one step more durable. So the information by way of put on and put on profiles that we measured final yr should not related.”
Isola admitted that Pirelli discovered of the plans to water-blast the monitor too late to vary the selection of compounds for the Turkish race.
“Often we’re knowledgeable by the FIA if there may be any change in tarmac, or if the circuit decides to resurface, or make any particular remedy. In that case, in all probability it was a late determination from the promoter, I think,” he mentioned.
“Once they determined to make this remedy, now we have been knowledgeable. So we had that data. Nevertheless it was too late as a result of we already produced the tyres, they usually have been already accessible for the race.
“It isn’t a simple interval additionally for manufacturing and logistics. So we made the tyres after which after that we have been made conscious of this alteration.”