问：高速公路速度从50英里 /小时及以上的振动

您好，在高速公路上行驶50及以上时，我有一个振动问题。我在驾驶员座椅，地板垫子和方向盘上稍微振动时感到振动。不会在低速或制动下发生。我坚信这与速度有关。我已经旋转了所有4个轮胎，平衡了4次，道路力量平衡两次，新轮胎；6个月大，新的转子和制动垫不到一年，经销商上周取代了Sway Bar End链接。哦！我是否提到我也做了一个轮子对准。我的想法用尽了。我抬起车，开始感到玩。 The only thing i noticed is a decent amount of play in the drive shaft axle; driver side. Its make a metal to metal sound when moving it side to side and top to bottom. Now iam not sure if its normal. I asked the dealer and they said its highly unlikely for it to go bad with the current milage on the car. Any comments and opinions highly appreciated. Thanks. 2012 Infiniti FX35 My car has 46800 miles. My car has an auto

我的汽车有46500英里。
我的汽车有自动变速箱。