I can tell you that the stock tow eye will break if you have a front impact of a smallish variety. Like following someone closely into a heavy braking zone and having the person behind you punt you into the car in front.....
...sorry Ken H, it really wasn't my fault ;-(... The stock eye is also slightly smaller than the 2" requirement if your tech person is having a nad day.

Look at the range of 'race eyes' offered by Rennenmetal.com. I put two on and use them to tie down the car on the trailer. Excellent sevice too.

Now I fear no BMW 2002 trunklids!

DZ