I have a set of Chicken Hawk Pole Position tire warmers for sale. I bought these new and have used them for two seasons.

They have three temperature settings: 135 F, 155 F, and 175 F. They are in excellent working order. There are no holes in these warmers.

These fit size 120 front tires and 180-195 rear tires. They retail for $540, I'm selling for $425 shipped to the continental USA.