Hi Chris, if it's a FWD:- Must use a new nut! tighten to 70Nm then +45deg,
If it's a 4X4:- Must use a new nut, tighten to 250Nm with the wheel off the ground, then slacken off 360deg, then tighten to 50Nm, then with the car on the ground, tighten +60deg
nigel, February 2011