Last-minute hard rear tyre switch defines Japanese MotoGP at Motegi
A last-minute switch to Michelin's untested hard rear tyre, mandated after Sprint race failures, defined the Japanese MotoGP.
A crisis over tyre safety forced a unanimous grid-wide switch to an untested compound for the Japanese Grand Prix at Motegi. Blistering and centre chunking on the soft rear tyre during Saturday's Sprint race led to its immediate removal from the Sunday allocation, triggering a Michelin-led crisis meeting that banned its use for the main event.
Michelin Introduces Hard Tyre as Safety Option
Michelin had introduced a specific hard rear tyre as a safety option for Motegi's newly resurfaced and highly abrasive track. This tyre was a unique combination, using the rubber compound from the standard soft option but paired with the stiffer, more heat-resistant carcass construction previously used in Austria. Three dry tyre options were available for the weekend, but the hard compound's distinct construction was designed to cope with the fresh asphalt's high grip and high wear characteristics.
Riders Avoid Hard Tyre Despite Availability
Despite its availability from the start of the weekend, no team used the hard rear tyre during Friday or Saturday's sessions. Preconceptions based on prior negative experiences, particularly from the Austrian Grand Prix the previous month, led riders to dismiss it. Jack Miller had described the similar stiff-carcass Michelins from that round as 'not an option', a view that seemed to be shared across the paddock.
Extended Warm-Up Forces Tyre Evaluation
To address the crisis, Sunday morning's Warm Up session was extended from 10 to 20 minutes specifically to allow all 22 riders to evaluate the hard rear tyre. This extended test led to a complete reversal of opinion. Following the session, the entire grid unanimously chose the hard rear tyre for the Grand Prix, a move Michelin itself recommended for the full-distance race.
Race Outcome and Rider Reflections
The entire grid started the race with a medium front and the hard rear tyre, a compound no one had tried before Sunday. After the race, Brad Binder reflected that his team had set up his bike too conservatively for the tyre, believing it could have lasted three race distances. Other riders admitted they had misjudged its potential. Francesco Bagnaia stated it was the riders' fault for not trying the tyre earlier, noting they had received Michelin's selection on Monday and got it wrong by not considering how the new asphalt would work with the soft compound in the stiffer carcass. Luca Marini pointed out that collective experience from five manufacturers and 22 riders at other circuits had led them to rule the tyre out, only to find it worked perfectly in the warm-up. The entire grid opted for medium front and hard rear tyres for the main race after the warm-up.
