Surface type for runways is missing in the Navigraph airport descriptions.
I can do most planning for my flight using a combination of Simbrief and Navigraph but the surface isn’t available until I start the sim, enter the aircraft, activate Nav systems and open up the airport info.
I need this info before I start the sim - is the runway concrete? asphalt? gravel?, grass?, dirt? Sometimes this info is available on charts (but not always). This affects what tires I will be using and what aircraft.