This is where I will recommend the use of POR-15.It will seal the leaks. Apply 2 coats. Inside the rim and out of the sun, it will not need to be topcoated. One thing, do not apply it to the bead contact area. POR-15 is slick enough the tire will lose it's grip on the rim. Drove my tire guy nuts until we figured out why my tires kept losing balance.
