Red Bull forced McLaren to unleash its full potent...

A high-degradation observe with floor temperatures reaching practically 50C laid the foundations for a Spanish Grand Prix race the place tyre administration could be essential. The whole lot appeared set for a McLaren one-two end, and the one approach to spoil the papaya get together was to behave aggressively and overtly – simply as Crimson Bull did with its sudden three-stop technique.

This was aimed primarily at countering one among McLaren’s largest strengths in Formulation 1: tyre administration over lengthy stints. That’s why Crimson Bull noticed the three-stop, all-out assault method as the one viable choice to attempt to problem McLaren – and, certainly, at a sure level within the grand prix, it nearly appeared prefer it would possibly work. Virtually.

Crimson Bull determined early on to pursue a extra aggressive tactic, particularly after Lando Norris confirmed he had the tempo to overhaul Verstappen on observe – a stark distinction from a yr in the past, when the Brit’s hesitation in overtaking was one of many key elements within the four-time world champion’s victory in 2024. It grew to become clear this time round that one thing completely different was wanted to place McLaren beneath strain.

“Given how the race was unfolding, we selected to make three stops. We made that call pretty early as a result of we noticed that in a direct battle it wouldn’t be potential to counter the tempo and tyre-management benefit McLaren had,” stated Horner on the finish of the race.

latest races, it is typically been obvious how Verstappen tries to maintain up with the McLarens early on, solely to finally don’t have any reply to the MCL39’s superior tyre administration. It was exactly this facet Crimson Bull centered on in constructing its technique, establishing an attacking race – made potential additionally by the effectiveness of the comfortable tyre in Barcelona, which proved to be one of the best compound of the weekend.

Which will sound counter-intuitive however the hardest compound, the C1, was nowhere: sliding everywhere as a result of it couldn’t discover mechanical grip, despite the fact that the floor right here is comparatively tough.

Crimson Bull was attempting to assault on pure pace versus tyre-management functionality, a chance right here as a result of the observe format theoretically favoured the RB21’s efficiency traits, with loads of lengthy, quick corners. Clearly, the three-stop method additionally got here with its downsides: primarily, the additional 22 seconds or so spent visiting the pits a 3rd time; secondly, site visitors, which all the time forces drivers to make use of their tyres greater than they’d like.

On this entrance, in the course of the second pitstop – when Verstappen switched to the medium tires – Crimson Bull made a really good move, rigorously monitoring the hole to Lewis Hamilton to make sure Max would rejoin forward of him, whereas additionally attempting to push and prolong his stint. And that is precisely when the race received fascinating.

Within the early stints, McLaren was all the time keeping track of how its rival was doing, with out ever actually feeling beneath menace. Nevertheless, when Verstappen switched to mediums and began pushing, closing in on the window for a possible undercut, the Woking pitwall needed to begin severely occupied with find out how to shield its place.

“After we noticed that Max was on a three-stop technique, we thought it wouldn’t be an issue, as a result of we had already overtaken him on observe,” defined McLaren group principal Andrea Stella. “And we had been alleged to have a great tempo benefit.

“However the actuality is, he was quick. After we switched to mediums, we had been pushing whereas controlling the tempo, however Max was gaining a lot sooner than we anticipated.

“At one level, we even instructed our drivers they must push extra. And each of them responded with one thing like: ‘I’m unsure I’ve way more tempo than this.’ At that time, we had been a little bit involved that the state of affairs could be extra open than we had anticipated in the course of the first stint.

“It may have develop into sophisticated for us, as a result of we had Oscar and Lando separated by about 2.5 seconds or so. So if we had wanted to cowl Verstappen, it might have been a bit tough with the 2 of them that shut. However, fortunately, Oscar discovered fairly a little bit of tempo on the finish of the second stint.”

Certainly, Piastri’s tempo in the course of the second stint, there’s a clear shift in pace as soon as the group instructed him to push: from lap 24 to lap 42, he averaged a 1m20.0s, however within the final six or seven laps of the stint – regardless of already having about 20 laps on these tyres – his common improved by practically half a second.

Oscar Piastri, McLaren

Picture by: Sam Bloxham / Motorsport Photographs by way of Getty Photographs

That is clear signal McLaren’s automobile nonetheless had one thing in reserve. It’s evident the MCL39 couldn’t keep that tempo for a whole stint however, when it actually mattered, Piastri confirmed there was nonetheless a transparent margin accessible, unleashing the automobile’s true potential to carry off Verstappen’s cost.

However the place does this distinction in tempo come from? Already on Friday, there was discuss of the MCL39 being considerably ‘weak’ on the entrance – and it is no shock that for a lot of the second stint, McLaren tried to not overstress the front-left tyre, notably in Flip 3 and different high-speed corners.

When Piastri’s race engineer, Tom Stallard, instructed there was room to push in Flip 3 – one of many key stress factors for the front-left – the complete potential of the MCL39 got here to mild, with Piastri rapidly dropping his lap occasions by a number of tenths. It was a crucial change of tempo, particularly because the Australian had simply accomplished the lapping part.

Piastri, additionally benefiting from the benefit he had constructed over Norris within the first stint, managed his tires excellently in the course of the early a part of the race’s second half, particularly preserving the front-left. It is no coincidence that Lando, who had pushed tougher within the earlier phases, didn’t present the identical shift in tempo and struggled with extra understeer in Flip 3 – a lot in order that he thought he was experiencing graining.

This typically happens when tyres are beneath excessive thermal stress and cornering masses, however it’s a phenomenon Pirelli has tried to dial out of the present compounds. It wasn’t an issue right here for anybody – it simply felt that approach to Norris as a result of his front-left was experiencing put on.

Whereas Piastri pulled away on the entrance, opening up the hole, the one between Verstappen and Norris stabilised, with Crimson Bull attempting to play its closing card: pitting early for the third cease to aim an undercut and attempt to take the place on observe – even when that meant doing extra laps on the identical compound. It was a transfer that McLaren instantly coated off by bringing in Norris.

In fact, McLaren may do that as a result of it’s at present two in opposition to one on the head of the sphere – an issue Crimson Bull additionally wants to deal with…