Overview
- Test rider Augusto Fernandez will race the new V4 as a wildcard at the San Marino Grand Prix on September 12–14.
- Fabio Quartararo says he will try the prototype in the Monday post‑race test and has set a half‑second lap‑time threshold to endorse it.
- Yamaha has not released any lap times for the V4 and says a full switch will happen only if the bike proves at least as good as the current M1.
- Misano was chosen for the first public run after paddock expectations had centered on a later debut at Motegi.
- Exact plans for the post‑Misano test remain unconfirmed, with paddock reporting pointing to Jack Miller’s involvement in development work.