When thrown, Tracker grenades will home in on the closest target and explode on impact. It will however prematurely explode if it hits an obstacle while tracking the target. If thrown on the ground, it will detonate instantly. When deploying this grenade mod against fast moving targets, the intended target might get very close before being hit. If close enough, throwers themselves might get caught by the blast.
Trackers benefit from Bouncy or Jumping payload mechanics, as they will not explode on collision with a wall. Bouncy trackers will explode and bounce off targets before homing onto enemies till it runs out of bounces.