Retarders on a vehicle: Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Retarders on a vehicle: Answers Increase the wear of brakes. Reduce the wear of brakes. Cannot be turned off. Explanation A retarder is a device that helps slow a vehicle, reducing the need for brake usage. Because brakes are used less when retarders are turned on, brake wear is reduced.
