I have a car that is 3 years old with alloy wheels and have bead leaks in all 4 tires. I've been fighting these leaks for months now, broke the beads and cleaned the rims and tire beads and the leaks come right back. One tire loses 4 psi a day and is showing wear on the outside edges from running low on pressure. It will be ruined in no time. Anyways, being desperate, I read on a forum that adding 50/50 mix anti freeze with a radiator sealant, the aluminum powder type will work. I figure that farmers have added anti freeze in their tractor tires for additional weight for years, so it probably won't hurt the rubber. I added about 3/4 cup of the mixture thru the valve and sloshed it around a bit to make sure the beads got soaked thoroughly and aired it up. It was still leaking a bit so I rolled the tire around a bit more and to my amazement no leaks, at all, hasn't lost a pound in 3 days. Has anyone tried this or heard of it? I'm wondering if I should remove the anti freeze that is still inside since it is already sealed or just leave it in the tire to maybe prevent a future leak? The tire rolls smoothly doing 65mph. What do you think? I think I'm gonna do all 4 tires before they are junk!