Join Date: Nov 2001
Location: state of confusion
You can check breakaway torque by jacking one rear wheel up clear of the ground, putting the transmission in neutral, and measuring the torque it takes to turn the lifted wheel. There is a tool or adapter that allows your torque wrench to be concentric with the axle, but IIRC a dead/dying clutch or cone LSD won't put up too much of a fight (maybe 50 ft-lbs or less) so for a first cut you won't be all that interested in accuracy. Meaning you can just use one of the lug nuts, testing up to no more than the lug nut's own installation torque. You will want to chock a tire against rolling in either direction.
Mine: '08 GT, 5MT, black/light graphite, un-Fstock (DD, occasional track day)
Wife's: '10 Legacy 2.5GT (DD, six-speed manual)
Spare:'01 20AE Maxima, 5MT (also my bad weather alternate)
Various Loose Parts: '79 Malibu