What size are the tires? June 20, 2019 16:38 Updated Follow We have increased the tire width for extra cushion and a more pleasurable ride. The new tire size is 27.5'x2.20'. Related articles How wide are the handlebars? What size and weight of rider can this bike support? What is the step-through height? What size tires are on the Aveny? Can I add lights? Comments 0 comments Please sign in to leave a comment.