The oil change will cost more because you will need 0W-40 and possibly Mobile 1. The oil alone will cost you some money. Then you need the filter.
The tires are 155/65-15 and 175/55-15 in the back if I am not mistaken. I have always gone to Discount Tire to get my wheels worked on. They have excellent service, they are about 1.5 miles from my home, and they are skilled and professional. PLUS, when I bring the smart in they love how the wheels only have 3 lug nuts to remove them, even though they have to manually lift each corner.