Wheel Adapter
That's a bit confusing for me...I have no idea what will work.
So what is the overall width of the adapter? 1 1/2 inches for the first piece then how much is the 2nd piece? I have no what the backspacing is on the Tacoma wheel. The JK wheel is a 4.5" backspacing.
I believe the overall width of the adapter is 2.5". I'll double check when I'm back home on Sunday.
I too, am not sure what the backspace is on the Tacoma wheel. I know that I did measure it when ordering the adapter. Do you have the Tacoma wheels to measure from? What size tires are you running? That will make a difference also.
How are you supposed to know how it will fit and not stick out or stick in too far under the fender?
Measure twice, cut once. LOL
The key measurements are wheel backspace and offset, tire width, distance from the face of the hub to the back of the wheel well, and the fender width.
If you have those numbers you can calculate the theoretical distance from the face of the hub to the inside and outside of the tire. Then, you can see what that leaves you for adapter thickness- which would move everything outboard.
(IIRC, AT recommends a min 1 1/2" clearance from the inboard side of the tire to trailer. I assume SoCal's suspension setup and clearances would be similar.)
You are definitely limited by the trailer geometry (i.e. axle width). You are also limited on the width of the adapter. You may find those limitations preclude the tire from running inside the fender. To me, the bigger concern is to make sure the tire doesn't rub on the trailer.
Take some measurements then we will have a better idea of what you're dealing with.