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Unlike other materials, rammed-earth tires are more accessible to the average person.

Scrap tires are ubiquitous around the world and easy to come by ; there are an estimated 2 billion tires throughout the United States.

As of 1996, as many as 253 million scrap tires were being generated each year in the United States, with 70 % being reclaimed by the scrap tire market ( leaving perhaps 75 million scrap tires available for reuse as whole tires ).

In addition to the availability of scrap tires, the method by which they are converted into usable " bricks ", the ramming of the earth, is simple and affordable.