When Motegi unveiled its newly resurfaced layout, the tyre selection puzzle grew more complex than usual. Michelin arrived with three rear-tyre specifications: the familiar soft and medium compounds housed in a standard casing, plus a less-publicised option – a hard rear tyre built on a reinforced casing. The compound itself was not markedly harder, but the sturdier construction promised greater resistance to blistering on the fresh asphalt.
Initial skepticism and the reluctance to test the hard tyre
During Thursday-free practice, the majority of riders voiced strong preferences for the conventional tyres. Luca Marini noted that riders typically favour the standard-casing construction, while Brad Binder described the usual tyres as “much nicer to ride”. Even Jack Miller expressed outright disgust, saying he would rather pack up and go home than try the reinforced version. Consequently, none of the 22 competitors logged a single lap on the hard rear on Friday and Saturday, leaving the tyre untouched while the weekend progressed.
Sprint race exposes soft-tyre vulnerability
The turning point arrived during the sprint event. The soft rear tyre, expected to deliver peak grip, began to develop severe blistering, compromising both Martín and Bagnaia’s runs. Michelin, observing the rapid degradation, withdrew the soft rear from the pool of available tyres for the main race and strongly recommended – though did not mandate – the use of the reinforced hard tyre. The medium was still an option, but teams were warned of potential durability concerns.
Sunday warm-up: a rapid reassessment
With the soft tyre gone, all eyes turned to the previously ignored hard rear during the extended Sunday warm-up. Nineteen of the twenty-two riders set their quickest lap on the reinforced tyre, instantly eclipsing the medium’s performance. The grip level was described by several riders as “unbelievable”, and the tyre’s reduced oscillation allowed riders to apply more throttle without excessive wheel-spin. The consensus shifted quickly – the hard tyre was no longer a fallback, it was the front-runner.
Race outcome and rider reflections
Marc Márquez, who claimed victory, confirmed that the hard rear was also suitable for the timed-attack phase, stating it was “a tyre that, even for the time attack, was a good tyre”. Fabio Quartararo admitted the team had been “a bit stupid” to overlook the option earlier, noting that the tyre’s stability reduced rear-end movement, potentially unlocking higher power on qualifying laps. Alex Marquez joked that the team “didn’t understand anything about bikes” when the hard tyre suddenly delivered superior performance.
Even riders who had previously dismissed the tyre, such as Luca Marini, changed their stance. He praised the grip, saying the hard rear “fixed all the problems on the bike”. Jack Miller, who had vocally opposed the tyre earlier, later suggested that a similar scenario could force the hard tyre to become mandatory in future events if teams continue to neglect it.
Implications for future tyre strategies
The Motegi episode highlights the risk of relying solely on historical preferences when a circuit’s surface changes. Michelin’s decision to bring a reinforced-casing option proved prescient, yet the initial lack of encouragement from team technicians meant riders missed a strategic advantage. As the championship moves toward the Indonesian Grand Prix at Mandalika, teams will likely revisit their tyre-testing protocols, ensuring that every available specification is evaluated under real-world conditions rather than preconceived notions.
