Before the tire police start ranting, these tires are on an off road only machine used to plow the shared private driveway. 42" dia swamper tsl with 90% tread. No bead locks. All four have slow leaks.Tubes in that size are pricey and not recommended where the possibility of the tire slipping on the rim exists. Liquitube: good or waste of time? Any other tips on sealing weather checked tires without using tubes?