It would be help if you tell us the brand and model rims you have the width and size. Nicer single walled Araya rims were pretty much standard on most Japanese Touring and MTB's from the 80's and have been road thousands of rough miles no issues when when you keep them trued and the hubs well adjusted. Some of the nicer ones like the slightly wider dimpled Araya are actually some what sought after. Myself if there original and in good shape I would just rebuild them with new bearings and some spokes new nipples if need and ride. Also a great way to add some robustness strength to these type rims is to buy some nicer wire bead modern touring or cross tires you can get some Continentalls pr Paseelis from Walmart delivered in a couple of days for about $50.