A method for monitoring a tire fitted to a vehicle includes detecting data from the tire, sending the data to a central processing unit using a predetermined telecommunications protocol, causing automatic processing of the data by the central processing unit to obtain at least one value for an index characterizing the tire during use of the tire, and sending the at least one value to a receiving unit. The data from the tire includes a code identifying the tire and at least one item of data regarding a state of the tire. A system for monitoring a tire includes a device for detecting data from the tire and a central processing unit. The central processing unit causes automatic processing of the detected data and generates at least one value for an index characterizing the tire during use of the tire.