I have a vintage Hawthorne cruiser (made by Sears), probably from the '50s or early '60s task manager online. I need to replace the tires and couldn't find them on ebay. My neighborhood bike shop won't order them because there isn't enough demand. They are balloon whitewall tires, 26 x 1.75 (fits 26 x 2.125 rim). If anyone knows of anywhere online or in my area (Detroit, MI) where I could find these, I'd really appreciate it!