If you replace your cars tire from 145mm widewith tube to 185 mm widetube lesswhat will effect milage of the car?

If you replace your cars tire from 145mm widewith tube to 185 mm widetube lesswhat will effect milage of the car?
ANSWER: Therewould be only a neglagible reduction in mileage because of the increased friction of the wider tire. You will need to make sure that a tubeless tire can be safely fit on your particular rim. Some require tubes, some accept tubeless tires