Ive torn both tricepts. The outer on my right and inner on my left. The experience is like an explosion or electrical jolt followed often by NO pain, but bleeding internally and visual black pooling the next day.
The muscle in my experince lifting the last 18+ years is that if its a tear, the muscle never 100% comes back in either strength nor original shape(but it may be close). It does in no way mean you have to quit lifting, just live with the difference. At least this has been my experience.