the alignment of the front wheels of a motor vehicle closer together at the front than at the back
toe-in详细解释
toe-in n.(名词)An inwardly-angled adjustment, especially a slight inward alignment of the forward edge of a motor vehicle`s front wheels to improve steering and minimize tire wear.(车轮定位)前束:角度向内倾斜做调整,特别是指汽车前轮的前缘稍微向内对准做调整,以便提高操控性及减少轮胎磨损