原帖由 老杨 于 2007-8-8 07:34 发表 $ O6 w4 w' Y9 K4 r& N9 b) @1、省油 + o3 b Q4 _4 C- x% N
平均每个铝合金轮毂比相同尺寸的钢轮毂轻2kg,一台轿车用5个便省了不起10kg重量。根据日本实验,5座的轿车重量每减轻1kg,一年约或节省20L汽油。而美国汽车工程师学会发表的研究报告指出,铝合金轮毂 ...
4 K* M6 `4 b- _4 K3 T 8 }7 J# N" Y# D/ I) WYou forgot to distinguish the difference between mounted mass and unmounted mass. The 2kg advantage is much more than it sounds, since it's unmounted mass.