I bought the tires only from Walmart. They delivered them to my house. I took the wheels (alloy) off my 560 and took them one at a time to Walmart to have the new tires installed. Very easy process.
If you want Walmart to install them for you be aware you must buy the tires from Walmart. They can be delivered to your house or the store. Don't remember what I paid for installation but it was very reasonable (including balancing).