Checking on Wheel Bearing Heat

East way to tell also if something is hot is by smell and appearance. Hot/dragging brakes emit a distinct odor and makes your rims nice and black. If you use the hand test method when checking temps, ALWAYS use the back of your hand when placing it up to rim. Lil trick of the trade from early days as a fireman, never to use palm of hand when testing a doorknob to see if hot cuz natural reaction is to close it if hot right around the doorknob.....not good. Was taught to use back of hand, so IMO, same rule should apply here tho you cannot clasp it onto anything, better to be safe than sorry.