When I accelerate my car is vibrating/shaken intermittently and it feels like it's coming from the rear end of the car. I had new brakes, rotors and tires put on and had to replace a caliper on the passenger rear. It's hard to pin point what is doing this as the drive shaft and half shaft with cv joints look good. There is a small leak in the cv joint on driver side not sure if this is an issue. Does anyone know what is causing this or had this issue?

 

I no longer have the car but was repeatedly replacing the brakes rotors, brake pads and brakes themselves due to shaking when applying the brakes on my Lexus RX 350. Lexus was telling me that I was riding the brakes too hard and while I really liked the car, I ultimately I got rid of it due to expense and the hassle of having it repaired. I am once again seeking another car -- would love to get another Lexus. So i googled the issue, and discovered many, many others have experienced the same issue on this and other models and received the same reply. I am shocked to see that Lexus continues not to acknowledge and/or fix this issue. Wondering what can be done to light a fire under them?

 

Hope it's not like I describe in my post here. How long have you owned the car? Have you had different sized wheels/tires (even mismatched tread depth - aka - uneven tire wear)? Is it a shudder when accelerating most noticeable between 3 - 5k rpms? Goes away when in neutral coasting?

 

The first thing to check are your wheels, to see if they are bent or maybe tires went bad. Take it to a tire shop and spin have them spin them or even balance them aswell.