Segmented mold for a tire and related molding method

A Method for molding a tire with a mold,

• providing the mold to mold a tire having a tread and two lateral sidewalls, the mold including:
• first and second shells that are intended to mold the lateral sidewalls of the tire,
• a plurality of sectors distributed in the circumferential direction, the sectors being intended to mold the tread of said tire, the plurality of sectors being radially movable between an open position and a closed position of the mold,
• wherein a spacing is interposed between each sector and each of the first and second shells in order to keep said sector and the first and second shells spaced apart in the radial direction in the closed position of the mold,
• wherein the first and second shells and the sectors are in contact in the radial direction only by way of the spacing,
• said spacing limiting the heat transfer from the first and second shells to the sectors and vice versa in said closed position of the mold, and
• wherein the first and second shells are heated to a temperature different from that to which the sectors of the mold are heated.