The present invention relates to a chain guide for a drive chain of a vehicle, the chain guide comprising a mounting part by means of which the chain guide is mounted on the vehicle, and a slider mounted on the mounting part for guiding the drive chain. The slider comprises a first guide element and a second guide element rotatable relative thereto, wherein the drive chain to be guided passes between these two guide elements when the chain guide is mounted on the vehicle. The two guide elements are preloaded against each other by means of a preloading device, transversely to the running direction of the chain.