The tire pressure labelled on the sidewall of the tires on the Compass is incorrect. Because the tire is paired with a wide rim and there are 3 wheels instead of two, the pressure is based on rider weight and should be as follows:
100-150 pounds - 20 psi
150-200 pounds - 25 psi
200-250 pounds - 30 psi
250-350 pounds - 35 psi
Do not inflate the tire above 40 psi because it will put excessive stress on the rim.