Dawn for street bias plies?

[Rory McNeil]

I have to think sidewall leakage is "luck of the draw" with (or without) the dish soap treatment. I have been soaping up the sidewalls when mounting new slicks for many years, but last month I put a new pair of MT 9 x 29.5 slicks on my Mustang, and when I took them to work to install them, I forgot my dishwashing soap. So I mounted them without any soap.But so far so good. After the first race on the new slicks, it stayed in the trailer for 2 weeks, and the tires lost less than 1 psi apiece in that time. I can say that I have slicks loose air much quicker if the tires have been dismounted and reinstalled, rather than if new tires were installed and left on the wheels until they needed replacing. I`m guessing that the stress of breaking down the beads on a thin wall drag slick hurts the sidewall integrity.