I bought a pair of 'Akront type' shouldered alloy rims- WM2 1.85" wide x 18" 36 hole -for my Sloper project. Got them on Ebay last year for a very nice price- well under $100 each, shipped. They laced up real nice with the original spokes. I feel I lucked out at that price and that I couldn't lose on the deal, so I jumped on it. There were three for sale and I'm sorry I didn't buy the third- it would look real nice on my CB 450 rear.
At 1.85", they are slightly wider than the original stock 1.65" DIDs and saved me a couple of pounds of unsprung weight overall, but it's more a matter of looks than performance considering the HP I have on tap, and they trued up very well, unlike the battered originals, which I could never get right. I thought I did a good job balancing them but it turns out the front still needs work. If you're considering performance, get the WM1s. The rim/tire combo I have looks a slight bit disproportionate, but maybe it's just me. I'm too lazy to take photos right now but will if anybody wants to get a look at them.
I mounted a cheap pair of 3.0" tires on them- that's stock width for the rear and a bit oversized for the front- and had to use a bit of force to install the front wheel with the front tire fully inflated. That is a match with the rim width according to a chart posted here, somewhere.
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