I ran no tubes for years. Wiping dish soap on the inner sidewalls (heavy coat) most times will keep them from leaking. Apply liberally with a sponge. Gluing the bead to the rim with purple Permatex keeps the tire from spinning on the rim. Works good. I now run tubes with Permatex. Been as quick as 1.24 60 ft. My car needed the extra stiffness provided by using a tube.
Doug