Transfer sirloin steak to a plate at room temperature. Salt generously on both sides, leaving at room temperature for 45 minutes. About 10 minutes before you're ready to grill, brush olive oil on your grill grates. Then, preheat the grill to 450-500 degrees. If able, keep another section of the grill on low heat
Season sirloin steaks with pepper and a sprinkle of salt, if desired, and place them on the grill, letting the side touching the grates sear for 2-3 minutes until golden brown. Flip with tongs and do the same to the other side
Check the temperature of the thickest part of the steaks. If they need more time to reach your desired doneness level, move the steaks to a low-heat area of the grill and cover, cooking for another 1-3 minutes until they come to temp
Transfer steaks to a clean plate tented with foil to rest for 5-10 minutes before serving
