Hissing/Air leaking noise when coasting or braking

Hello, I have a 2016 Tundra with an odd sound coming from the front drivers side. It sounds like air escaping/hissing and gets really audible when braking. The sound goes completely away when turning left, but continues when turning the truck right. The truck feels and drives completely fine otherwise. It is a 2016 platinum with no mods and only has 14k miles. Does anyone know what could be causing this noise?

I already made an appointment with the dealers service department.

 

BUMP

 

I posted videos with the sound of the hiss to the following site: I got my service appointment bumped up to this Thursday. I will keep both forums updated to help anyone having similar issues. More on the sound: when I turn the steering wheel while stationary, I can hear the hissing sound when I turn left. Anyway, it seems to be an issue with the wheels/steering because when I rev the engine a bit while stationary, the noise is not there.

 

My link is not showing. Here are the videos.

sound continuous


sound heard at beginning of video.

 

sounds like some sort of vacuum leak.

 

Really basic question to get started:

If the sound increases when braking, have you given your wheels/brakes a good wash? Clean out any debris that may be trapped in there.

 

It does, but a vacuum that gets louder when braking? Brake booster maybe but wouldn't there be an associated fluid leak?

 

The noise seems to get more audible when I apply the breaks, but It seems to be because breaking makes the engine slow and makes it more audible. Another thing I notice is that the noise is not there when reversing. Only when going forward or turning the wheel stationary.

Here is another video of the sound turning the wheel while stationary.


also to answer the other poster. No fluid leaks.

 

Last video sounds more like a belt/pulley issue.

 

Update: Turned out to be the front break pads that were worn out at 10% below sensor. They replaced pads and resurfaced rotors. The noise is gone now