Stacyc Innova Tire What's better than the Tooth Fairy and way more fun It's the Fresh Rubber Fairy. Stacyc offers genuine replacement tires for their 18eDrive and 20eDrive electric balance bikes. Replacement tires arrive in OEM sizes and tread patterns. Features: Tube type (inner tubes sold separately) Unique tread pattern 18eDrive electric balance bikes require the 18 tire size 20eDrive bikes require the 20 tire size Sold individually