Thanks for the input everyone!

I was having trouble deciding on those trailer treads. I thought it looked rather odd and then I looked over at armada prime and realized why, not to mention that it probably does not fit Pipes character either. So, no treads for this trailer.
Minor update: Got the trailer sprayed metalic blue on the outside and hammered silver on the inside. Lots of things tried to go wrong (bugs, leaves and hair) but it ended up looking alright. I was pleasantly surprised.
I'm going to go ahead with the big wheel's on the truck... I need the extra clearance for the set of pipes I have planned to go onto his forearms.

Has anyone got a good picture of a Semi that is built for drag racing??? Had thoughts about turning him into one since his name is Pipes.
Also, thanks for the compliment on my Knock off tape tigatron Skullgrin,

I've got a auction going on right now for a botcon tigatron and decided to give it away as an extra.
Thanks everyone and I'll get some more pics up soon.