Preheat the grill to high heat
Oil the grill grates lightly
Pat the tuna steaks dry
Brush tuna steaks with oil
Season with salt and pepper
Add optional seasonings like garlic, lemon, or soy sauce
Place tuna steaks on the hot grill
Grill for 1 to 2 minutes per side for rare
Grill for 2 to 3 minutes per side for medium-rare
Avoid overcooking
Remove tuna steaks from the grill
Let rest for 2 minutes
Serve immediately