Steadiness of Efficiency isn’t going to get common approval. However one among its upsides is that a number of producers are able to profitable and setting just about similar laptimes. Take the Professional qualifying session at British GT’s Oulton Park spherical final yr, the place zero.088 seconds cut up the highest 4 – which included a Porsche, two Lamborghinis and a Mercedes.
However, whereas BoP will theoretically enable all seven GT3 constructors a shot at reaching related occasions when the Cheshire monitor hosts British GT’s season-opener this weekend, it nonetheless boils right down to the groups and drivers to search out the right set-ups and extract their vehicles’ full potential. And that engineering nous might be extra essential than ever this yr because the arrival of Pirelli’s new P Zero DHF tyre compound threatens to vary the established order.
“I feel that’s going to vary the entire grid all through the season,” reckons 2 Seas Motorsport co-owner Nick Cristofaro. “Everyone seems to be beginning with a clean piece of paper.”
Pirelli UK motorsport supervisor Jonathan Wells describes the brand new rubber, which might be used on GT3 and GT4 vehicles and accommodates a rise in renewable supplies, as “the only greatest change we’ve actually had in our GT vary within the final 10 years”. It’s the results of a have to maintain tempo with automobile improvement and ongoing calls for to enhance sustainability.
“It’s the first time that we’ve modified just about every thing, so it’s genuinely a ground-up factor,” Wells explains. “All the pieces else has very a lot been about evolution, however that is extra of a revolution for the primary time.”
Suggestions from groups is that the brand new tyre is quicker – Wells admits the laptime achieve had confirmed “larger than we anticipated” – and thereby exerts extra put on.
“Should you’re inherently going faster, the tyre needs to be producing extra power and due to this fact the potential for it to go flawed at this early stage is in fact there,” says Wells. “You’ll be able to simply over-stress the tyre maybe a bit an excessive amount of, so it’s an enormous studying course of.”
New DHF Pirelli tyres are sooner and imply extra administration is required because of this
Photograph by: JEP / Motorsport Images
Coming after a interval wherein the tread compound “has been remarkably constant”, Wells says groups can have a lot to unpick: “They should assume, ‘What facet of the efficiency is coming from the mechanical adjustments we’ve made to the tyre and what’s coming from the compound, and the way can we greatest utilise that to not solely get the last word peak efficiency but additionally to handle that over an extended run?’”
Cristofaro says “tyre administration goes to be an enormous issue” as groups handle the graining impact. “It’s very circuit-dependent as properly,” he factors out. “It’s not the case of getting one set-up that works in all places and also you tweak the pressures. We’ll run totally different set-ups for various circuits to handle the tyre.”
He provides that the DHF additionally wants specific care to ensure it’s within the optimum vary for qualifying runs and might be unforgiving when dropping out of it: “Should you’re exterior that window, then you definitely’re nowhere, a distinction between one or two seconds.”
Sandy Mitchell, the British GT champion in 2020 with Barwell Motorsport, has already raced the DHF within the opening spherical of the GT World Problem Europe Endurance Cup at Imola earlier this month. The Lamborghini manufacturing facility driver agrees that “to get the optimum out of the tyre appears to require a bit extra effort and a bit extra precision in every thing you do, whether or not it’s temperature, administration or driving fashion”.
“It’s the first time that we’ve modified just about every thing, so it’s genuinely a ground-up factor. All the pieces else has very a lot been about evolution, however that is extra of a revolution for the primary time” Jonathan Wells, Pirelli
“I feel we would see groups and drivers having to simply strive various things,” explains Mitchell, who will once more share with Adam Balon this season. “All people continues to be studying what one of the best ways to do every thing is, however I feel it’s clear that it possibly takes a bit extra administration from everybody’s facet.”
Mitchell believes that, primarily based on Imola, “front-engined vehicles within the cooler circumstances are having a little bit of a greater time at switching the tyres on”. However the query is, will anyone unlock one thing particular come qualifying on Saturday? Whereas Cristofaro concedes that “numerous groups have completed much more [test] days than us”, he believes that off-track work on rolling roads and damper dynos may have a tangible profit.
Mitchell raced the tyre at Imola in GTWCE and reckons extra effort and precision is required to get the rubber into the fitting window
Photograph by: Jules Benichou/SRO
“There’s numerous funding from our facet to make it work,” he says. “However who is aware of? Till you do the primary race, we may have gone the exact opposite method and somebody may need discovered one thing by doing laps that’s higher.”
Mitchell is properly accustomed to tyre saving, having spent his 2020 marketing campaign alongside Rob Collard carrying further weight as a Silver pairing. Might this expertise, and the information Barwell has gained from Imola, play in his favour?
“It may very well be a superb benefit for us, we’ve positively realized some info,” he says. “It was fairly chilly, so it may very well be fairly similar to British GT, particularly at Oulton Park at the moment of yr!”
Tyres are a continuously neglected component of racing, particularly when there’s a single provider and compound. However, till the groups get on prime of it, the outdated adage that it doesn’t matter how good your automobile is that if the factor that connects it to the bottom doesn’t work may very well be oft-repeated within the early rounds.
A number of groups from British GT, together with the Enduro Motorsport McLaren squad, contested final weekend’s GT Cup opener at Donington to achieve expertise of the brand new tyre in race circumstances
Photograph by: JEP / Motorsport Images