You bet it is tough. Years ago trailer manufacturer's started buying up all of them they could find for light trailers. Your best bet is to find Chrysler, Dodge, DeSoto and maybe Plymouth station wagon rims.. There is a trick I learned years ago for measuring rims with tires still on them. Take a steel tape measurer and insert through the cooling slots and catch the zero end on the lip on the inside and measure to lip on your side. I don't remember the inches it is supposed to be on the 6.5 inch wheel as opposed to the fastly more numerous 6 x 14 wheels. Measure on one of your known 6.5s for the measurement required. It took me 6 months to find the number of missing 6.5's my small fleet required. If anybody wants me to measure a spare and post the required inches, just ask Larry W Jett 950 Woodside Road Suite 4 Redwood City CA 94061 650 368 3966 [Non-text portions of this message have been removed]