In Utah, the minimum tread depth for a tire on a motorcycle is: 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 In Utah, the minimum tread depth for a tire on a motorcycle is: Answers 1/32 of an inch. 2/32 of an inch. 1/4 of an inch. 1/2 of an inch. Explanation In Utah, all motorcycles must have tires with tread depths of at least 2/32 of an inch.