Your mom's correct! At least I'd like to believe so! Haha.

You know, I've actually seen those pictures - many moons ago - but I've seen them. I actually considered buying that trailer, but couldn't justify the cost at the time so I got a custom-built 22' open deck steel trailer for about $1,000 cheaper. In hindsight it was a stupid rationale because the steel one I got was bare; no tire rack, no tool box, no nothing. Plus, I'm currently trying to sell that same steel trailer - for about a $1,000 hit. Had I bought that Trailex, I could have sold it today for the same price I paid for it. Ultimately, I lost money by not buying that Trailex and, of course, the functionality of a tool box and tire rack. God, and what about the extra fuels costs? My steelie weighs in at 2200lbs or so unloaded; 5,000lbs with the car on it. Stupid error - you live and learn.

Resale is just one of the beauties of aluminum trailers and one of the main reasons why I decided to get a custom built aluminum trailer. Yes, the one I've got on order is pricey, but the justification is that I'll recoupe about 85%-90% of the price tag when I sell it on. And because the one I've got on order is larger than anything I'll ever need, it will have a long operational life for me. If I prorate the loss over several years, the hit I take is, relatively speaking, a lot softer than it would be with a steel trailer.

Thanks, I'll post pictures of my lash-up in about 2 months when I pick up the trailer. I've got a thread going in the E53 forum about it so I'll post them there.

Oh, and now that I've been on such a tangent, back to the answer to your original query: no, you shouldn't need a WD hitch or worry about overloading a suspension that isn't an air setup. That said, although not necessary, a WD would add a nice touch of extra stability anyways.

Let us know how you get on with the trailering