The invention relates to a method for controlling the regeneration cycles for an air dryer (10) in a closed ride control system for vehicles, by which a vehicle body is suspended relative to at least one vehicle axle, having compressed air chambers (6a - 6d) connected to a compressed air line by means of branch lines (38a - 38d), a compressor (8), an air dryer (10) disposed at a compressed air line (4) to a compressed air reservoir tank (12) connected to the pressurizing medium chambers (6a - 6d) such that compressed air can be transferred from the compressed air reservoir tank (12) into each pressurizing medium chamber (6a - 6d), pressurizing medium can be transferred from each pressurizing medium chamber (6a - 6d) into the pressurizing medium reservoir tank (12), wherein the compressed air chamber (6a - 6d) and the compressed air reservoir tank (12); can be filled with compressed air and vented via a compressed air line (32) that can be connected to atmosphere, or can be filled via a compressed air suction line (5) connected to the compressor (8) and vented via the compressed air line (32), the amount of compressed air delivered by means of the compressor (8) through the dryer (10) is measured, the temperature and/or the humidity of the air drawn from the atmosphere is measured, as much compressed air as necessary is continuously fed through the air dryer (10) such that said air can be considered to be saturated under the assumption that the air having the highest potential ambient temperature and humidity is drawn through the compressor (8) and delivered through the air dryer (10), the amount of regeneration air required for the air dryer for said amount of compressed air in order to achieve the desired dew point is determined as a function of the ambient temperature and/or humidity of the indrawn air, and the regeneration of the dryer (10) is performed using said amount of regeneration air.