胎壁 meaning in English

side wall

X challenge will run on federal s latest development : new 595rs x challenge special edition tyres . it has a bright x challenge mark on the sidewall that expresses the aggressive combat oriented image
X challenge将采用飞达最新科技结晶：新一代595rs x challenge特别版轮胎，胎边注明亮白色x challenge字样，标示经过强化打造的胎壁，展现侵略性的战斗气息。
Powerful upgraded , brand new semi - slick , sport competition 595rs with enhanced sidewall customized for x challenge - specially designed for exceptional stiffness , enhancing traction and grip while extreme cornering and optimizing power transition during sharp braking and accelerating . jamie ma went on to say
大幅性能提升，全新设计的竞技版595rs ，是飞达为x challenge特别生产的轮胎，高度提升胎壁强度，抓地以及循迹性能，不论是激烈过弯和速度增减急煞加速，都能应付自如。