The production volume of automobile tire tubes for April was 87,005 tons, a year-on-year decline of 6.3 percent. It marks the 17th consecutive month of production decline, according to data compiled by the Japan Automobile Tyre Manufacturers Association (JATMA). Four of six tire tube classifications saw year-on-year declines in production volume: trucks and buses, 9.1 percent; small trucks, 9.7 percent;…