Yes, the company I found was Diamond Back.. Thanks for your input, I haven't heard any negative reviews of their redline tires. I guess I'll need to research further. Diamond Back's website explains that the front facing side of the tire will not have any logo or DOT info "due to their process" and now you explain why. I did find another company's website that sells the red lines as a DIY kit with adhesive & their site explains how to install. It also mentions needing to use their special tire shine/dressing so I question how good the redlines would stay on the tires. The site is https://www.tirestickers.com/redline-tire-kits/ in case some of you want to look.