You removed the front bumper to trailer your S?
You must have low ground clearance!
I put mine on the exact same trailor by backing into it. (Rear of the car facing forward)

Dan

 

There was no way i would of made it on the trailer without taking the bumper off.... with my lip i have almost no clearance..How much did you pay for useing the trailor from UHaul?

 

I cut open the vent too with a dremel tool, however I then installed my front lip so you really cant notice it unless you get all close and personal with the front. It did feel a little better opening that up cause of my CAI was right there too.