Whenever your LBS tells you that you have a dip and dice in your braking surface. DO NOT, I repeat DO NOT inflate your tires to 120 psi.
I did and it BENT the sidewall and peeled the brake surface off like tin can.
The best part was I had a slime tube in there and the rim shredded the tube.
It sounded like a gun shot went off and my ears are still ringing. I had slime everywhere. It was gross.