0000935836-07-000041 SC 13G/A 1 20070209 20070209 SANFORD J. COLEN WILLIAM E. STUDEBAKER AMERITYRE CORP 0000945828 3011 870535207 NV 0630 SC 13G/A 34 005-80486 07598260 1501 INDUSTRIAL ROAD BOULDER CITY NV 89005 7022931930 1501 INDUSTRIAL ROAD BOULDER CITY NV 89005 AMERICAN TIRE CORP 19951117 APEX CAPITAL LLC 0000943518 680347819 CA SC 13G/A 25 ORINDA WAY SUITE 300 ORINDA CA 94563 925-253-1800 25 ORINDA WAY SUITE 300 ORINDA CA 94563 SC 13G/A 1 apexamerityre13ga.htm