2003 Subaru Impreza Owner's Manual - Page 311

In case of emergency the wheel nuts to the specified torque, following the tightening order in the illustration. The torque for tightening the nuts is 58 to 72 ft-lb (80 to 100 N-m, 8 to 10 kg-m). This torque is equivalent to applying about 88 to 110 lbs (40 to 50 kg) at the top of the wheel nut wrench. Never use your foot on the wheel nut wrench or a pipe extension on the wrench because you may exceed the specified torque. Have the wheel nut torque checked at the nearest automotive service facility. After placing the jack in its storage location, turn the jackscrew clockwise by hand until it becomes too hard to turn. Then, tighten it by an additional 1/4 - 1/3 of a turn using a screwdriver or the jack handle. Unless the jack is properly secured, it may rattle while the vehicle is moving. 15. Store the flat tire in the spare tire compartment. Put the spacer and tighten the attaching bolt firmly. Also store the jack and wheel nut wrench in their storage locations. - CONTINUED - 9-13