For fast measuring, you can use the empty can of limeade concentrate to measure the tequila. One 12-oz. can is equivalent to 1 1/2 cups. Serve in salt-rimmed glasses, if desired.
Stir together first 3 ingredients in a large pitcher until blended. Serve immediately over crushed ice. Garnish, if desired.
Note: We tested with Yazoo Dos Perros Ale, Grolsch Premium Lager, Truck Stop Honey Brown Ale, and Bud Light beer.