I believe 'Tired' would be a feeling. A collective response to many sensations may give rise to it, or just thinking too much.

Say you have been walking or working out too much, more than you are accustomed to, then your leg muscles may cramp or feel heavier suggesting you should rest now; your cardiac muscles may be needing more oxygen to keep up with the demand of exercise, and may increase the heart rate to keep up etc... suggesting you to slow down.
All these are physical/bodily sensations, which reach the brain, which in turn interprets them all collectively as being tired, which is a feeling now.

Also feeling tired can be directly and only from internal stimuli, like too much cognitive exertion, can fatigue your mind, making you feel drowsy and tired.

And when you are feeling tired, it may in turn make you grumpy, which is an emotion.