325 ft. lbs
The lug nuts on the driver side are left handed thread and will have a l stamped in the end of the stud passenger are right hand thread
Depends on alot of things- how tight were they made? are the studs and nuts rusted?, etc.
What about it.
19mm or 3/4 "
Pretty simple really just use a lug wrench ( there is one supplied with the vehicle ) and the appropriate key if it a security nut and remove it, then screw the new one on and tighten.