The 22-inch version of the new Stun 1 tire isn’t just bigger, but better as it’s built to handle higher pressure with reinforced sidewalls (100psi). The Stun 1’s grippy tread pattern is a modernized version of the long proven Stunner design. The upgraded tread is designed to roll fast, plus withstand the bigger impacts and increased demands of today’s riding. 100psi maximum tire pressure.