According to the invention there is in conjunction with a pneumatic tire having a central tread, one or more radially-extending belt(s) disposed radially inwardly of the tread and an innerliner disposed radially inwardly of the belt. Apparatus for mounting an electronic tag (40) within the tire is characterized by a patch (70) having a first side (72) for mounting against the innerliner of the tire; a second arcuately-shaped side (73) and an internally threaded member (71); and an externally threaded member (64) having a portion extending from a side (74) of the tag and threadable into the internally threaded member of the patch.