145° isn't hot for brakes, if the brakes are not hot they don't work. Do some hard braking and they'll be over 200°. If you are usinfg ceramis pads they do not aborb heat so that heat gets transferred to the other brake components. That is the main reason I stay away from ceramic pads, I like pads to stay hot.
The rotor surface/pads for sure - but that seems abnormally hot for the wheels to have as a constant temperature. Especially for just normal driving.
I've set brakes on fire bedding pads/rotors - so yeah they can get up there.