The lack of tire testing prior to the Phillip Island round has caught both control tire companies out. As such, Race Direction has decided to shorten the Moto2 race from 25 to just 13 laps, while the MotoGP race will now include a compulsory pit stop to swap bikes, and the race length has been cut by one lap from 27 to 26 laps.
In addition, the MotoGP riders are prohibited from using the softer option rear tire, and will be forced to use the harder option. Both decisions were taken on safety grounds, after it was found that neither the Moto2-spec Dunlop nor the MotoGP-spec Bridgestone can handle race distance on the newly-resurfaced tarmac.
The lighter, less powerful Moto3 bike are not affected, and the Moto3 race will run the scheduled length.