20" wheels have dominated the BMX market for over 30 years. Kids on theirs Schwinns with loose grips, pretending to me motocross racers took their bikes to the dirt mounds and bayous to over come gravity. 24" and 26" cruiser BMX racers later hit tracks along with little brother 20" wheels. 26" cruisers died rather quick in the race scene, but transcended to mountain biking. Back to 20" wheels for freestyle and street use... until now. Faction Bike Co is a BMX company dabbling with 22" wheels. 22"? Yes, something totally new for BMX.
I raced BMX for years, and rode some street BMX until my love affair with 'big kid' bikes began. Alas the BMX world is seeing the benefit of a larger wheel, but not TOO large.