I had a sealant kit in my
I had a sealant kit in my Miata. Those kits expect you to remove the valve stem, pour the gunk in, replace the stem, inflate, then drive. I live in New England and this is simply a ridiculous proposition from November to April, and if the gunk is frozen it won't work anyway. Since it was a mainly summer-driver Miata, I got a can of FixAFlat and also made up my own repair kit (plugs and stuff). I had 2 flats with that car in 4 years. Luckily, one at home (Put car on blocks and took tire to store in my other car), and one was slow enough I could drive it a bit, fill up and make it to the tire repair place. I think the repair kits make no sense. A donut lets you drive on the flat to safety and wait for AAA to come and change the tire safely. You can then get the tire fixed or replaced the next business day. Let us know what you decide. Thanks