Entyre supplies have provided the following information for drivers regarding air pressures and the use of gaiters for the HiFly HF201 tyre, the new BriSCA F2 control tyre from 1st April 2023. Tyre Pressures The recommended minimum air pressure setting for the HiFly HF201 tyre is 29-psi. Drivers are reminded that this is a road-use designed tyre, and therefore tyre pressures should be set appropriately. Tyre Gaiters The use of tyre gaiters is optional, as per the BriSCA F2 rulebook.