Sliding roof system for an automotive vehicle with a movable roof part, a fixed in location roof portion and an adjustment mechanism positioned within a guide track arrangement in order to displace the roof part between a closed position, a ventilation position and an open position below the roof portion. The adjustment mechanism includes a drive carriage driven by a drive system and a support profile fixedly connected to the roof part and operatively connected to the drive carriage by a slotted guide mechanism. The support profile, on the rear end region thereof, is articulated to a support lever, which lever is longitudinally displaceable within the guide track arrangement by a support carriage. Within the guide track arrangement a support recess is provided and fixed in location, in which a support element of the support lever is supported in response to a position of the support lever.