Suzuka: Ferrari aims to capitalize on SF-25 strengths amid layout and track surface | 2025 F1 Japanese GP. Suzuka’s test of strengths: McLaren under pressure, Ferrari evaluates upgrades.

McLaren arrives in Suzuka leading the standings and as the favorite. However, to win again in Japan, the reigning world champions will need to work on the weaker areas of the MCL39, such as qualifying and corner entry. Ferrari, on the other hand, aims to capitalize on its strengths, provided it brings effective solutions to the SF-25’s issues. Meanwhile, Red Bull’s extra weapon is Yuki Tsunoda, who will contribute to the RB21’s preparation. Another key factor to watch is the new track surface, which is expected to play a significant role.

The track
Suzuka Circuit is one of the most technical and fascinating tracks of the season. Its extremely low impact on braking systems, rated 1 out of 5 by Brembo, speaks volumes about the nature of the Japanese circuit. It is a smooth and flowing track with sustained speed throughout the lap, with qualifying averages just below 240 kilometers per hour. The hairpin and final chicane are the only true slow corners, while the rest of the layout is dominated by high-speed bends. Key sections include the first-sector complex, the long Spoon Curve—demanding high stability—and the Degner Curves, where precision and sharp turn-in make the difference.

The succession of direction changes at over 200 kilometers per hour generates strong lateral accelerations, which have notable consequences. Suzuka is, in fact, the most weight-sensitive track on the calendar, where every additional gram on the car comes at a steep cost in lap time. Tire loads are also among the highest of the year, rated 5 out of 5 by Pirelli, on par with Barcelona, Silverstone, Zandvoort, Spa, and Qatar. This is further amplified by medium-to-high downforce setups, which are expected to increase compared to the first two races, likely bringing some new aerodynamic elements, particularly in the wings.

Double test
The opening “S” curves will reveal much about the cars, featuring a sequence of five turns between 200 and 250 kilometers per hour, where even the slightest mistake compromises the entire section. This part of the track demands a stable rear and a precise front end—areas where McLaren has struggled, as Lando Norris himself admitted about the MCL39: “Some of the characteristics I don’t like; they don’t suit the way I’d like to drive—attacking the corner entry and braking.” Equally crucial will be the long Turns 6 and 7, as well as the double Spoon Curve (Turns 13-14), which challenge mid-corner stability. Overall, Suzuka is even more demanding on the front end than Shanghai, where McLaren, despite winning, did not appear untouchable. For the reigning champions, Japan will be the first major test of maturity.

On paper, the track seems to suit Ferrari’s strengths, as highlighted by Charles Leclerc: “We’ve made great progress in high-speed corners. Low and medium-speed corners, on the other hand, are areas where we still need to work a bit more.” Due to both setup choices and inherent design characteristics, the SF-25 has struggled with traction so far. However, Suzuka has very few low-speed zones and is instead packed with sweeping corners that emphasize aerodynamic efficiency. Ferrari’s ability to capitalize on its strengths will depend on how well it can stabilize the floor and get closer to the ground after the wear issues seen in the opening races. The first adjustments involve fine-tuning the suspension, which will be tested on Suzuka’s demanding terrain—a track full of elevation changes, compressions, and asphalt irregularities that make ride height control particularly tricky.

Unknown track surface
Another defining feature of Suzuka is its track surface, which differs from that of Melbourne and Shanghai. The asphalt is more abrasive, increasing the mechanical grip component over adhesive grip and requiring a different tire approach. Its roughness also amplifies tire deformation and hysteresis, generating heat and accelerating wear. The newly resurfaced section between the final chicane and the Degner curves, covering the entire first sector, will need to be evaluated. Initial reports indicate a surface with noticeable bumps and high grip, contributing to lap times dropping by up to 1.5 seconds. As in China, anticipating the rapid track evolution will be key over the weekend, this time with three free practice sessions available. However, it remains possible that the most effective strategy could change during the race.

The high loads exerted on the tires, particularly lateral forces, have led Pirelli to introduce the hardest compounds in its range: C1, C2, and C3, one step harder than those used in China. The prescribed tire pressures are similar to those of 2024, with 24.5 psi at the front and 23.5 psi at the rear, though these values could be increased after the initial sessions. Tire degradation at the front will be a crucial factor in the race, as it is traditionally high and could lead to a two-stop strategy. However, overtaking is not particularly easy, placing greater emphasis on qualifying and leaving McLaren with some uncertainty. In both Melbourne and Shanghai, the MCL39 secured pole position, but not with the same ease it showed in race trim, reflecting its difficulty over a single lap. “It’s a tricky car to drive and to put together a clean lap,” Norris warned.

Mercedes and Red Bull, the chase has begun
In Japan, rivals will try to exploit McLaren’s vulnerabilities to put it under pressure. At Mercedes, there is anticipation over whether the planned upgrades will arrive in Suzuka. The W16 has the potential to perform well, inheriting its predecessor’s effectiveness in high-speed corners but without the same sensitivity to external conditions. The hope is that this time, Andrea Kimi Antonelli can showcase his potential without the setbacks of the first two weekends, though Suzuka is a new circuit for him.

At Red Bull, all eyes are on Yuki Tsunoda’s debut. For the Japanese driver, this will be a learning weekend, as he adapts to extracting performance from a car that is superior to the Racing Bulls but less intuitive to push to the limit. Having a competitive second driver would be crucial for the Milton Keynes team, which is still fine-tuning how to maximize the potential of a car that, despite appearances, has been conceptually overhauled. The RB21, designed to operate differently from its predecessors, has shown promising progress from testing to China, with the potential for another step forward in Suzuka.

Williams and Racing Bulls arrive in Japan as the benchmark for the midfield, while Haas remains an unknown. The VF-25 performed well in Shanghai but showed worrying bouncing issues in Melbourne, which could be even more pronounced on Suzuka’s high-speed corners and compressions. Since then, however, the team has improved its setup strategies—just like Ferrari, which needs a swift recovery to avoid saying goodbye to its title hopes too soon.