Schwalbe Big Apple HS 430 air suspension built-in. Strong> with the Big Apple began ten years ago, the trend towards Balloonbike: comfortable cycling without complicated technology! The air cushion, the tire is used as natural suspension. with approximately. 2 bar rolls a Balloonbike wonderfully light and full suspension effect. A normal tire with a width of 37 mm must be inflated tough with 4 bar to similar good to roll.