Abstract: A safety support adapted to be mounted on a rim within a tire fitted on a vehicle, to support the tread of the tire in the event of a loss of inflation pressure. The safety support includes a substantially cylindrical base adapted to be fitted around the rim; a substantially cylindrical crown adapted to come into contact with the tread in the event of a loss of pressure, and leaving a clearance relative to the tread at rated pressure; an annular body for connecting the base and the crown. The support is produced, at least in part, by axially assembling a number of annular sections, such that each of the annular sections includes, regularly distributed over the circumference, connecting walls of substantially axial orientation extending at least over part of the annular body and adapted to cooperate with the connecting walls of the adjacent annular section(s) in order to axially assemble the annular sections.