2017 Q60 Red Sport 400
The brake discs would be hot if the brakes were dragging, not the wheels.
Okay, if you drive long enough with your brakes dragging, then the wheels can get hot. I wouldn't wait that long to check the discs. You could feel the heat radiating off of the discs without touching them.I just got through replacing my wife's front brakes. Wheel indeed was very warm to the touch. I would no touch the caliper