Automotive weather strip

An extrusion-molded portion in the upper side portion of a weather strip is provided with a main seal member (13), a sub-seal member (23) and a coupling portion (31). The main seal member (13) has a first fitting base portion (12) in the form of a substantially flat plate fitted to the first retainer of a door frame, and a hollow seal portion formed integrally with the first fitting base portion. The sub-seal member (23) has a second fitting base portion (22) in the form of a substantially flat plate fitted to a second retainer, and a seal lip. The seal lip, the coupling portion and the hollow seal portion are consecutively formed by monolithic molding with EPDM sponge rubber. The greater part of the second fitting base portion and the central part of the first fitting base portion are formed of EPDM solid rubber. Therefore, the difference in expansion rate hardly occurs and a warp is restrained from being generated.