In response to the special requirements of electric car tires, we have independently developed a 235/45R18 tire. The main parameters of the tire's structural design are as follows: outer diameter of 662 mm, section width of 253 mm, tread width of 194 mm, tread camber height of 7.8 mm, bead contact diameter of 460.7 mm, section horizontal axis position (H1/H2) of 0.952473, tread pattern featuring asymmetric tread pattern, utilizing a five-pitch design, with a total of 41 composite pitches, and a tread pattern depth of 7.2 mm. In terms of construction design: the upper layer of the tread adopts highly wear-resistant and low rolling resistance tread rubber, while the lower layer adopts low heat generation transition rubber; the belt layer uses two layers of 4×0.225UT high-strength steel cord with a cord density of 79 EPD. The manufacturing process employs a one-step building machine and a hydraulic hot plate curing press. The performance test results of the finished tires show that their key indicators, including outer edge dimensions, strength, bead unseating resistance, durability, high-speed performance, and rolling resistance, all meet or exceed national and corporate standards.