Lower sidewall portions (18, 20) of a vehicle tire (10) are spread apart by a spreader tool (28). Spreader bars (32, 34) are placed between the spread apart lower sidewall portions (18, 20) of the tire (10). Concrete (116) is poured in place in the tire. One or more iron members (120, 122, 124, 126)...http://www.google.es/patents/US7063483?utm_source=gb-gplus-sharePatente US7063483 - Submergible tire structure
