Squelching and brake shudder on start 2006 Inifinity G35X

When the car is cold (hasn’t been run in over an hour), in the first 100 feet of rolling forward there is squelching sound coming from the right wheel well area, then the brake pedal shudders.



Aside from the this troublesome sound and vibration the car runs great. After the first and only sound/vibration the brakes are fine for hours of driving until the next cold start.



Thoughts?



Thanks,

-J

I read somewhere that this is the ABS system adjusting itself, and is normal behavior.