The average size bubble blown using Dubble Bubble bubble gum was 3.7 inches. Hubba Bubba's average bubble was 3.3 inches, Bazooka's was 3 inches. Bubblicious had an average bubble of 2.7 inches and Bubble Yum was close behind with an average bubble of 2.6 inches.
So if you want to blow a big bubble Dubble Bubble bubble gum is the gum for you