All-steel radial tire shared by TT & TL

The utility model discloses a TT & TL shared all-steel radial tire, which relates to the field of automobile tires and comprises a tire body, the tire body comprises a tire bead contour matched with a rim, and the tire bead contour is composed of a tire bead side arc, a tire heel arc and a tire bead bottom arc. Wherein the tire bead bottom arc is composed of a first straight line section and asecond straight line section, the first straight line section horizontally extends outwards in the axial direction of the tire at the position where the tire bead bottom arc passes through the innerend point of the tire bead, and the second straight line section is connected with the first straight line section and the tire heel arc. Therefore, contact pressure between the tire bead of the tireand the rim is changed, the tire bead can be combined with a 5-degree deep groove rim to form a TL all-steel radial tire, the tire bead can also be combined with a 5-degree flat bottom rim to form a TT all-steel radial tire, and th