If you mean 75 feet x 15 feet then the square footage is 1,125 square feet.
Yes. When you purchase them make sure that the lug nut pattern fits a jeep. WIth my jeep I used 15 inch wheels and 235-75X15 tires and they didnt rub the inside of the front wheel well when turning. I think you'd find that anything larger than that will rub.