Sears Guardsman are really good tires.
Kelly tires are made by Goodyear, Sears Guardsman are made by Cooper. Both are good tires.
Cooper Tires is the Manufacturer. They do not say what brands are built at what plant. They have tire plants in Korea, Japan, Taiwan, China and USA.
The Michelin Group makes Riken tires - they are good .
Roadhandler is a Sears brand tire. Sears does not make tires but instead farms out the production of their tires to different tire manufactures. The company that makes their tires may change from year to year. As of 2012-2013 the Roadhandler Touring tire is being made by Hankook Tire Company in South Korea. The Roadhandler Sport which will go on sale in mid 2013 and Sears has not said who will make this tire. It may or may not be Hankook.
Atlas
I was told that Michelin makes them for Discount Tire.
MXR tires are manufactured by Douglas Wheel company. MXR tires can be purchased at many stores, such as Walmart, Sears, Pep Boys, Lowes and Goodyear.
Each company makes many different types of tires. They both make premium tires and also make a value line of tires. You have to compare them evenly. Both companies make excellent tires. Uniroyal tire company is owned by Michelin Tires. Cooper is owned by no other company and makes tires for Avon, Dean, Mastercraft, Futura, Hercules, Arizonian, & Starfire. At one time they manufactured all Sears Guardsman tires. You will not go wrong with either brand of tire.
Sears has a great selection of tires. They're prices are very competitive.
The Sears Guardsmans by Radar are horrible. I bought Sears guardsmans in 2007 and 2010, those were good. The set I bought in Oct 2013 are horrible. They pulled to the right, so I rotated them front to back, that got me a bad shimmy. Sears went bad.
Sears Tire Center sells RoadHandler, BFGoodrich, Bridgestone, Continental, Cooper, Dunlop, Falken, Fierce, Firestone, General Tire, Goodyear, Guardsman, Hankook, Kumho, Michelin, Superguard, and Uniroyal brands of tires.