[JimD]

Do you mean the coupler of the trailer is for a 2 inch ball? I have a class III receiver hitch on my SUV but I don't remember seeing any trailers with a receiver connection on them.

With respect to the angle of the trailer it may transfer a little more load forward or help your load in the trailer to shift forward but I think it is primarily a cosmetic thing if you load the trailer correctly. If it bugs you, you could try to find a 1.25 hitch bar with more rise. There isn't nearly the variety in 1.25 inch as there are in 2 inch, however, so you could have to have somebody weld you one if you want the trailer to be level.

If the trailer weighs nearly 1000 lbs are you going to have to be careful what you put inside to stay within the 135i's tow rating?

Jim