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How do I fix a flat tire with fire?
I keep a radial patch kit in my car but I think you need fire to properly seal the patch. Before I use the kit, how do I fix a flat tire with fire?
Bonnie Stinson · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Great question! Fire can be used in two ways to fix a flat tire, either to vulcanize rubber or to seat the bead so the tire can be inflated.
The first thing you need to know is that tires are flammable—and tire fires can be toxic and difficult to extinguish. Don’t attempt this repair unless you know what you’re doing!
It sounds like you’re asking about the use of fire with a patch. Most patching kits do not require the use of fire to complete the patch. You can do this on the side of the road in just a few minutes, no flames required.
If you want to try using fire to seat the bead—which we do not recommend—start by demounting the tire and setting it flat on a non-flammable surface in a well-ventilated area. Make sure you have a fire extinguisher on hand.
- Depress the sidewall to expose the rim
- Spray a small amount of flammable liquid inside the cavity (do not use gasoline)
- Light it with a torch or throw a match on the area
- The gasses will expand (i.e. explode), spreading the sidewalls and reseating the beads
- Overinflation will result, so put out the fire and bleed excess (hot) air from the tire
Virtually all roadside assistance programs offer flat-tire help if you’re feeling unsure about doing the repair yourself.
Hope your tire gets fixed soon!
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