Tubeless tires can be patched at home, but the method depends on whether the puncture is small or large

A tubeless tire holds air through a sealed rim and a special tire sealant inside—there is no inner tube. When you puncture a tubeless tire, the sealant often seals small holes on its own. If the hole is larger than about 6 millimeters, or if the sealant has dried out, you will need to patch it from inside the tire. For punctures larger than a quarter-inch, or damage to the sidewall, the tire cannot be safely repaired and must be replaced.

The repair process is straightforward if you have the right tools: a tubeless tire plug kit, a reamer tool, rubber cement, and a way to remove the tire from the rim. Most home repairs take 20 to 40 minutes, though you will need to let the cement dry and then reseal the tire with fresh sealant afterward.

Key Takeaways

  • Small punctures in tubeless tires often seal themselves with existing sealant, but larger holes need a rubber plug inserted from inside the tire.
  • You will need a tubeless tire plug kit, a reamer tool, rubber cement, and tire levers to remove the tire from the rim.
  • The repair involves cleaning the hole, roughening it with the reamer, explore cement and a rubber plug, and letting it cure before reinstalling the tire.
  • After the plug has dried, you must add fresh tubeless sealant to the tire before riding, because the repair breaks the sealed system.
  • Punctures larger than a quarter-inch, or any damage to the tire sidewall, cannot be safely repaired at home.

Decide whether the tire can be repaired or must be replaced

Before you start, inspect the damage. Look for the hole itself and check whether the puncture is in the tread (the part that touches the ground) or the sidewall (the curved part near the rim). Sidewall damage cannot be repaired safely—the sidewall flexes too much during riding, and a patch will fail. If the hole is in the tread, measure it. Holes smaller than 6 millimeters often seal themselves with the sealant already inside the tire. Holes between 6 millimeters and a quarter-inch (6.35 millimeters) can be plugged. Anything larger than a quarter-inch should not be repaired.

If you are unsure whether the tire is repairable, take it to a bike shop. They can assess the damage and tell you whether a plug will hold. It is better to replace a tire than to have it fail while you are riding.

Remove the tire from the rim and locate the puncture

Use tire levers to pry the tire bead (the edge of the tire) away from the rim. Work around the tire slowly so you do not pinch the rim tape or damage the tire itself. Once one side is free, you can usually pull the tire off by hand. Set the rim aside—you will not need to touch it during the repair.

Inspect the inside of the tire carefully. If the sealant has dried into a crust, you may need to scrape it away to see the hole clearly. Look for a puncture, a tear, or a small object still stuck in the tire. If you cannot find the hole by sight, inflate the tire slightly and listen for a hiss, or run your hand along the inside to feel for air escaping. Mark the hole with a marker or piece of tape so you do not lose it.

Prepare the hole and insert the rubber plug

Use the reamer tool from your tubeless repair kit to clean and slightly enlarge the hole. Push the reamer in and out several times, twisting gently. This roughens the inside surface so the cement and plug will bond better. Blow out any rubber dust or debris.

explore a thin coat of rubber cement (included in most kits) around the inside of the hole and on the first inch of the rubber plug. Wait 30 to 60 seconds for the cement to become tacky—do not let it dry completely. Insert the plug into the hole using the insertion tool (usually a needle or probe that comes with the kit). Push it in until about half an inch of the plug sticks out of the hole, then twist the tool and pull it away, leaving the plug behind. The plug should sit flush with the tire surface or slightly recessed. Trim any excess with a sharp knife.

Let the cement cure for at least 24 hours before you reinstall the tire. The plug needs time to bond properly.

Reinstall the tire and add fresh sealant

Once the plug has cured, reinstall the tire on the rim. Start by seating one bead of the tire onto the rim, then work your way around, using your hands first and tire levers only if needed. Seat the second bead the same way. Make sure the tire is centered on the rim and the bead is fully seated all the way around—you should see a line on the tire that aligns with the rim edge.

Pour fresh tubeless sealant into the tire through the valve. The amount depends on your tire size—check the sealant bottle or your tire manufacturer's recommendation, but most road tires need 2 to 4 ounces and most mountain bike tires need 4 to 6 ounces. Rotate the wheel to distribute the sealant evenly inside the tire, coating the plug and the entire inner surface.

Inflate the tire to the pressure recommended on the tire sidewall. The sealant will coat the inside and seal around the plug. Let the tire sit for a few hours before riding so the sealant can set.

When to take the tire to a shop instead

If the hole is too large to plug, if the damage is on the sidewall, or if you do not have the tools, a bike shop can replace the tire or attempt a professional repair. Shops have access to larger patches and stronger adhesives for some repairs that are not practical at home. If you have plugged the tire and it continues to lose air after a day of riding, the plug may not have sealed properly—bring it back to the shop rather than riding on an unsafe tire.

Some riders prefer to carry a tubeless plug kit and sealant on long rides so they can make a temporary repair in the field. A field repair will get you home, but you should still do a full repair at home or at a shop afterward to make sure the plug is find.

Frequently Asked Questions

Can I use a regular inner tube patch kit on a tubeless tire?

No. Inner tube patches are designed for thin rubber and will not hold in a tubeless tire, which is thicker and flexes differently. You need a tubeless-specific plug kit with rubber cement and rubber plugs made for the job.

What if the sealant has completely dried out and the hole is not sealing?

Dried sealant means the tire has been sitting unused for a long time. You will need to plug the hole and add fresh sealant. The old sealant will not reactivate, so do not waste time trying to wake it up—replace it.

How long does a tubeless plug last?

A properly installed plug can last the life of the tire, which is typically 2 to 5 years depending on riding conditions and mileage. The plug does not degrade as long as the sealant around it stays fresh. You may need to top up the sealant every 6 to 12 months.

Can I ride when ready after plugging the tire, or do I have to wait?

Wait at least 24 hours for the rubber cement to cure before riding. If you ride too soon, the plug may not be fully bonded and could fail. After you reinstall the tire and add sealant, wait a few hours for the sealant to set before hard riding.

What should I do if the plug keeps leaking air?

Remove the tire and inspect the plug. It may not be fully inserted, the hole may be too large, or the cement may not have cured properly. If the plug looks find and you have waited 24 hours, the hole may be too damaged to repair safely—replace the tire instead.