How Do I Plug A Flat Tire? And Other Questions on Tire Plugs, Answered
How to Plug a Tire (And When It’s Actually Safe to Do So)
First things first: we’re sorry.
Most people don’t search for “how to plug a tire” unless they’re either standing on the side of the road right now (please be careful) or staring at a tire that’s clearly losing air. If that’s you, this isn’t how you planned to spend your day—and we get it.
Flat tires are frustrating. They can also be scary, especially if one goes flat while you’re driving at speed. If you’ve already swapped on the spare, you’re probably wondering whether the damaged tire can be repaired—or if you’re stuck buying a brand-new one (or two…or four).
Here’s the good news: many tires can be safely plugged, and a tire plug can extend the life of the tire while saving you time and money.
When You Can’t Plug a Tire
Before grabbing a plug kit, check where the damage is.
Sidewall puncture:
Stop here. Sidewall damage cannot be safely plugged or patched. The tire needs to be replaced.
Tread puncture (nail, screw, small object):
A tire plug is usually a safe option.
If the object is still stuck in the tread, mark the spot with chalk or tape before removing it. Once it’s out, the hole can be surprisingly hard to find again.
Can’t see the leak?
- Add a little air to the tire
Listen for hissing,
or
- Spray soapy water on the tread and watch for bubbles
That’s your puncture.
How to Plug a Tire (Step by Step)
1. Prep the Tire
Most tire plug kits include:
A
reaming tool
A
plug insertion tool
- Sticky rubber plugs
- Tire cement
Use the reaming tool to clean and slightly enlarge the puncture so the plug can seal properly. If the hole is extremely small, you may need to carefully pre-drill it so the reamer can fit.
2. Load the Plug
- Thread a plug through the eyelet of the insertion tool
- Coat it with the included tire cement
The cement helps create an airtight seal once the plug is in place.
3. Insert the Plug
- Push the plug firmly into the hole (this takes some effort)
- Pull the tool straight out, leaving the plug behind
It’s normal for the ends of the plug to stick out above the tread. Trim the excess flush with a razor blade once it’s seated.
4. Let It Set and Check Your Work
- Allow the plug to cure for the recommended time
- Reinflate the tire
- Check for leaks again using soapy water
If no bubbles appear, inflate to the recommended PSI and reinstall the tire.
Is a Plugged Tire Safe to Drive On?
Yes when done correctly.
A properly installed tire plug can last for thousands of miles and does not affect tire balance or traction. That said, a flat tire is a good reminder to inspect all your tires:
- Check tread depth
- Look for dry rot or uneven wear
- Consider overall age
If the tires are already near the end of their lifespan, think of the plug as a temporary fix and a timely heads-up.
How Much Does It Cost to Plug a Tire?
Basic tire plug kits:
under
$10
Larger or more complete kits:
$25–$50
From a time standpoint, plugging a tire yourself is often faster than waiting at a tire shop. Less downtime, less money spent, hard to argue with that.
Tire Plug vs. Tire Patch: What’s the Difference?
Both repairs stop air loss, but they work differently.
Tire plug:
- Quick
- Easy
- No need to remove the tire from the rim
Inserted directly into the puncture from the outside
Tire patch:
- Requires removing the tire
- Usually done at a tire shop
Applied from the inside of the tire
Patches can be effective, but plugs are the most convenient option for roadside or at-home repairs.
Want to See It Done?
If you’re more of a visual learner, Hagerty has a step-by-step tire plug video on our YouTube channel.
Consider signing up for a Hagerty Drivers Club membership, which includes:
- Emergency roadside assistance
- Help with lockouts, battery jumps, tire changes
- Membership benefits such as the Hagerty Drivers Club magazine, exclusive discounts and more.
Sometimes the best repair is not having to do it yourself.
