From the Volvo FAQ's
Torque Specs on Alloy & Steel Wheels. [Query:] Is there any difference in wheel nut torque specs between steel and alloy wheels? [Response:] There is no difference in the torque requirements for steel or alloy wheels in Volvos. The difference is the studs. The 240s and earlier should be torqued to 85 ft-lbs. The 700/900 should be torqued to 66 ft-lbs, the 850 should be torqued to 81 ft-lbs. [Editor's note: I use anti-seize on each stud to ease nut removal when changing to or from snow tires.] My Question is: For the 700/900 series isn't 66 ft-lbs too little? My mechanic says to go for 85 ft-lbs as he would be worry about road safety at
66 ft-lbs.