A tread strip for a vehicle is formed of at least two parts, an inner part and an outer part. The inner part is configured for attachment to the vehicle and/or to an outer part. The outer part is configured for attachment to the inner part and/or the vehicle. The outer part further includes an intermediate portion extending along a longitudinal axis between two attachment portions, the two attachment portions being configured for attachment to the inner part. The inner part has an intermediate portion extending along the longitudinal axis between two end portions. The end portions are configured for attachment of the inner part to the vehicle and/or for attachment to the outer part. The tread strip may be mounted to a vehicle by attaching the inner part and then attaching the outer part to the inner part and/or sealing the inner part with respect to the vehicle.