i was taking the rear drum off the wifes frst, and on the frs thers one 29mm nut that holds the drum on, it goes on in reverse thred, well what a job i had taking that off

used a massive bar and still couldent get the other side off to have a look at the shoes, should it be that tight? the book says it should be 290 n/m but god thats tight , do peeps just guess it or should you always use a torque wrench?
andy