2-way hydraulic ram running at 1200psi presses clay into the tyres. Steel band around the tyre is needed to constrain it or the tyre just elongates. Note how swollen the tyre is.

Wade & Clinton (15yrs) using tyre press. Together they would press 30 265X70X16” tyres in a morning and still have energy to play sport in the afternoon.

Below. Tyres are simply rolled up the planks and put into place. Center of tyres are filled once they are on the wall.