1996 Lexus ls400 wanders left and right and the suspension feels loose when braking at low and high speeds but?
it goes straight on the road, took it to a big National Tire Chain and did an oil change and got a free alignment and brake inspection and they told me its a rear wheel bearing. Would this cause all these ailments, the car feels like it has it wants to detach itself from the chassis
Wheel bearings are only known to make a howling noise when shifting the vehicles weight from side to side(think of a controlled swerving). I would recommend taking your car to a shop that has people who have been trained to work on Lexus', not a tire garage..
I presume rear wheel drive, Possibilities are various ,check universal joints on drive shaft, bushings on rear assemblies that fasten to frame and rear end. Usually bad wheel brg will make bad rumbling sound. Also check rear trans mount.