There are three standard adult cruiser wheel sizes: 26 inches, 27.5 inches, and 29 inches in diameter. Various tire widths are available as well, ranging between 1.95 and 4.0 inches. “In general, smaller wheel diameters offer more nimble handling–but slightly less balance and stability–while larger wheels require less force to turn at a given speed (i.e. less effort to ride) and are a bit more stable, but are heavier and accelerate more slowly,” Arnold says.