balance or alignment

My car's 左前轮有一些偏磨，我就自己做了rotate。然后我发现在低速时，方向盘有些抖动，高速时却不抖了。请教诸位高手，这是balance or alighment problem? What can I do? If I do not do anything, what will happen to the car?
Thank you very much.

所有跟帖： 

• 回复：balance or alignment -carjunk- ♂ (313 bytes) () 08/16/2004 postreply 14:27:02

• 回复：回复：balance or alignment -kath1236- ♂ (96 bytes) () 08/17/2004 postreply 13:00:44

• Neither balance nor alignment -Big_Benz- ♂ (60 bytes) () 08/16/2004 postreply 14:30:59