Atlas
Sears has a great selection of tires. They're prices are very competitive.
Cooper tires is the main manufacture of all sears guardsman tiresCOOPER now makes the Guardsman plus tire, Sears changed suppliers a couple of years ago and increased the warrenty to 50,000 miles
Automotive tires sold at Sears are offered for varied prices, from under $100 or over $400 per set. These prices vary based on the model and brand of the tire itself.
There are many stores which carry the Goodyear Eagle brand of tires. Fountain Tire, Sears Tire, and Canadian Tire all carry this and other brand of Goodyear tires for trucks, cars, and SUV's.
Sears Tires have a pretty good choice in manufacturers. They have good pricing too and they're a well known brand that you can feel comfortable purchasing knowing they won't go out of business.
Yes, there is such website for tires exclusive to Sears. At http://www.sears.com/shc/s/automotive-tires/c-1020100?intShip=3&intlDelivery=3&i_cntr=1342570582031, you can check whether or not they stock a particular brand of tire you require.
Champiro is a brand of tire that is sold at a variety of auto parts stores and tire stores specifically. Stores that carry this brand of tire include Discount Tires and Sears. Champiro tires are also sold internationally in the UK and Australia specifically.
Sears Guardsman are really good tires.
Kelly tires are made by Goodyear, Sears Guardsman are made by Cooper. Both are good tires.
Yoplait Yogurt Yokahama Tires
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.
If you are looking to purchase sears tires online then try going to sears.com where they have a wide variety of sears tires for you to choose from. I'm sure you will be able to find what you are looking for.