Spray Fix cans
 

Anyone use these?

No. Patching or replacing a tube is quick, easy, and reliable. Plus, it doesn't require lugging around a can of fix-a-flat, doesn't make a mess when the fix-a-flat goop escapes from the hole, and doesn't foul valves like sealant can.

Never used 'em, but fairly sure they aren't intended for use with tubes. Tubeless, perhaps (since automotive tires are tubeless).

.. as answered in your other post .. Schwalbe marathon Plus Tires and thorn-resistant innertubes ..

[though the schwalbe Innertubes are pretty nice , better in comparison with common sourced innertubes.]

I wonder if those cans would inflate a bike tire to full pressure. Car tires use 30-40 psi, bike tires use 80-120 psi. And they will only work with a Schraeder valve.

You seem pretty determined to avoid ever having to change a tube. Okay, here is what you should do.

1. Have a bike shop install flat resistant tires. Gatorskin, Marathon, etc. The widest ones that will fit your bike.

2. Have them install flat resistant tubes.

3. Have the shop load the tubes with sealant - Stan's or similar. The shop will tell you it is a bad idea, and it is for most people, but you don't want to ever change a tube no matter what.

4. Have the shop install tire liners. These are thick rubber strips that go inside the tire and provide extra protection for the tube.

5. Keep the tires adequately inflated. If pressure is too low, you can get pinch flats.

This will be the most flat resistant setup possible. You will probably notice that your bike feels heavier and slower.