Not sure if you're running stock rims/tires, but 33 is about right. You do not want to go the the max. pressure ... you'd be riding on "circus dachsund balloon doggies" 
acuralegend94 said:Hey i was wondering. My tires say 55 max press. The manual says inflat tires to 33psi. Do i just keep it at 33psi then or do i go up to 55psi?
Thanks