Hey Guys,

So I have a 2013 GS 350 AWD whith 33K miles. The issue I recently developed is that there is a vibration that I can feel in the floorboard and also a grinding sorta noise as well while cruising. This continues to happen even if I let go of the paddle/gas.

The wheels have been balanced (2) times (not road force) and it does nothing to help. Also just had completed alignment as well from an independent shop. Attached is a video I took this morning as you can hear the noise more clearly towards the end.

Any input is highly appreciated:

1. Do you guys think it could be a warped rotor as the brakes/rotors have never been changed since 30K miles.

 

Check your rotors and your caliper. Maybe it's sticking. See if the rotors are extremely hot after a drive.

 

I didn't think much about my caliper. I will be changing the rotors by the end of this month as they have been ordered. Aren't the rotors supposed to be hot after a drive ? :/

 

if the caliper is sticking, meaning it's always putting pressure on the rotor, it's going to feel very very hot. It may also cause the vibration.

 

So I drove a short distance right now and indeed that one rotor (driver side) is extremely hot compared to the rest. I really hope it's not a bad caliper because I had it custom powder coated

 

you may have to get it rebuilt or get a rebuilt one from the parts store. Not sure if you can get the front one from a parts store though.

 

Yes I am waiting on my new brake pads/rotors to come and then I think I'll go ahead and see if the pistons move. One guy told me that the brake pads were soo worn out that the metal on metal was touching and they got joined together.