If you have a Bentleys manual, which all would recommend for any DIY'er, it should be in there. If not, right click and save the following bmw_torque_valuesfor future projects as well. Its a very handy reference.
Good luck with your tie rod(s). Make sure you have a good quality puller on hand. If you're in Canada, go 'borrow' the puller set from Canadian Tire. There is an excellent one in there that popped mine off quickly. Would probaly work wonders on a thrust arm as well
Dave M