Mountain bike tire size is a hot topic at the 'mo'. Forget 29ers. Forget 650Bs. BRING BACK THE 16ER!! Watch these guys do the impossible on bikes they've dug out of storage (or stolen from a child). It's time to PLAY HARDER. Just take your old kid bike, change the handlebar (or don't), and go for a ride! Save your cash, get creative with your stash! This video goes to show you can road bike, mountain bike AND BMX ramp ride on your kid bike! Badass MTB & BMX on Kids' Bikes | Play Harder, Ep. 2