i just sold a trike,wanted to restoer it with ww tires,did alot of research for ww tires to use on the og wheels,very limited product out there,i found newer kids bikes on craigs list that had the appropiate modern rims,converted my hard tires to balloon tires,the best chance i had finding tires was to google search baby bugy tires,the trike places i tried were very limited in size and only had nos hard tires at $129.00 each