Wow ok holy smokes.
So I found something I've been after for a while now - a koenig toolbox truck bed on an old f350/f450 frame. My goal was to have a nice big toolbox trailer, mount an air tank and propane tank, load tools on it, build a gasoline powered air compressor head - etc. and so forth. It's important that it be an 80's ford so that the wheels are 8x6.5 so that I can carry two spares and both will fit my van and my trailer.
ok, with me so far? I found one, and threw two 8x6.5 tires into my van and went to pick it up.
I got there, and I couldn't fit the 8x6.5 tires on the lugs. I looked at it front and back, but no matter what I did it just would not fit. I realized. "oh this is a dually - must be an 8x170mm."
Tried to get it home on the shot tires that were there, and one blew. Wife is furious and impatient by this point. it took me a good half an hour to get the hitch off with a blown rim twisting the hitch sideways, on grass in the dark on the side of the road. Left the trailer on a easment and drove the walk of shame home with wife angry and tired.
The next morning I looked up on craigslist, found some wheels that I thought were ford 8x170 and bought them, drove them down and - they don't fit. lugs are too far apart. I measure them with a ruler and somehow I get it in my head that they are 8x180.
I go to a local used tire place, grab two ford 8x170 rims AND have them put a tire on my old blown rim... my other rims are all 16.5s. I even have the guy compare my rim with the ones I am buying to verify they are the same, he says "They are the same"
get back to the trailer, the new rims don't fit either. I put on the one spare I bought onto the old rim, and limp home, with 5 tires that don't fit in my trailer, and one rim.
I get home, and I measure the original rim again... 6.5 inches.
I sit back, smoke a cigar, drink a beer and pull the spare off and put my original wheel that I drove down to pick up the trailer with - and it goes on like butter. I have no idea how it wouldn't go on the first time.
fortunately I paid next to nothing for any of these other wheels I bought, and the tires on two of them are real nice. I guess I'll dump them all on craigslist. If anyone here in texas within reach of austin needs a whole lot of 8x170 rims, I will gift them to you just so I can have done something positive in this whole experience.