I use no tubes in my 28x11.5x15 Hoosier Quick Time Pro's. I have them screwed. I've had no leakage problems, but I do use Palmolive dish soap to coat the inside of the tires before I mount them. I used to run the same tire but smaller, and when I drilled the rims for screws I used Dawn, and it did not work as well. Just my $.02 My car weighs 3370 with me in it, and I run 17-18 psi.
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Darin
'64 Bonneville Wagon (sold)
69 Lemans-All motor (sold)
9.81 @ 136.39MPH
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