I changed a 38-622 size tyre to a different brand 37-622 one. The original tyre stated a pressure range of 40-60 psi, while the new one states 50-85 psi. What are the consequences of going below the recommended lower limit (50)?
The bicycle is used by a light rider, typically with pressures between 40-50 psi for comfort reasons. This bike is mainly used for getting around town, sometimes on gravel roads.
EDIT: I received many useful answers about how to decide whether the pressure is too low. One aspect of the question that was not fully addressed is why there is a different pressure recommendation between two different tyres of (almost) the same size, and whether the type (rather than size) of the tyre really makes a significant difference in how low one may go with the pressure.