Mich. Comp. Laws § 257.37: “Owner” defined.

Sec. 37.

"Owner" means any of the following:

Any person, firm, association, or corporation renting a motor vehicle or having the exclusive use thereof, under a lease or otherwise, for a period that is greater than 30 days.

Except as otherwise provided in section 401a, a person who holds the legal title of a vehicle.

A person who has the immediate right of possession of a vehicle under an installment sale contract.