I have to say that this type of thread is one of the things I enjoy most about this site. I like learning about all the different subjects outside my collecting area of focus. Having said that please understand I do not know if Riverside Tire was formally associated with Champlin or not, but I recently sold this set of Champlin Shakers and Riverside Tires was advertised on the back. I'll have to look through my collection to see if any others advertise a brand of tires or not, but I don't recall any others off the top of my head. For your enjoyment!
