E36s must be towed using a wheel lift or flat bed. Do not tow the car on all four wheels unless you;re doing that for a very short distance (e.g, moving the car to a safe place). When towing the car from the front with the rear wheels on the ground, a maximum distance of 30 miles (20 according to some) is acceptable. If you need to tow your car farther, have the rear wheels placedd on dollies.
DO NOT use sling-type equipment. This will mess up your front bumpers and spoilers.
If your car is an automatic (Delmarco), towing it with the rear wheels on the ground can result in transmission damage due to lack of lubrication.
If absolutely necessary, you can tow your automatic with the rear wheels on the ground, but the tow should not exceed 25 miles and the speed should remain under 30mph. Be sure that the transmission fluid has been topped off before starting the tow. Tow the car in neutral. If towing farther than 25 miles, add one quart of ATF, or -- bette yet -- remove the driveshaft. You will have to pump out or drain the surplus fluid once the tow is completed.
Notice that I say "if completely necessary" and similar things in various places. Your best bet is to tow it using a truck with flat bed equipment. That is what I will do with my car this Thursday. I cannot tow it lifting the front because one of the rear wishbone arms is broken. For the same reason, I am not confident that it will hold very well if lifted from the rear wheels.