Tire Repair: Safe or Not?

Hello everyone!

If a tire is damaged, it often happens due to a nail or a screw. For such cases, there is an emergency repair kit available:



The repair method is as follows: The foreign object is removed. A patching/insertion tool is coated with vulcanizing agent, and the hole is roughened with it, and the vulcanizing agent is applied. Then, the repair patch is pulled over the insertion tool, also coated with vulcanizing agent, and the patch is drawn through the hole. After removing the insertion tool, the protruding end of the repair patch is trimmed, and the tire is inflated (with air or CO2).

I had very good experiences with this product on my motorcycle. Since the damage occurred at the beginning of my vacation, and the tire had been newly mounted beforehand, I repaired the tire and finished the vacation with it.

The repair kit was 14 years old and worked perfectly. The tire was completely airtight and withstood high speeds. However, the included leaflet recommends limiting the maximum speed to 60 km/h and not driving too far on the repaired tire. Now I think this is just a precautionary measure from the manufacturer. After all, who wants to take responsibility for a patched-up tire?

Looking at the patch, it's shaped in a way that prevents it from coming out of the hole again. The vulcanization process seals everything tightly, which is easily verifiable. The only remaining question is about the tire structure. Is the fabric of the casing weakened to the point where it could tear further? How much reserve strength is there? Does anyone know of any test bench or practical trials of tires repaired in this manner?

Regards, mcgregg.

HI.

My father once got a parking ticket in France for parking on what was called a "mushroom."
It was cleanly cut off on the running surface and also worn down, but you could always hear it.

It is important that you are only allowed to repair the tread surface.

Personally, I would only drive a self-repaired tire to the nearest dealer. But I've also had my own experiences – once, a broken bicycle rim caused me to break a bone. Just thinking about a DIY tire blowing out on my Passat at 220 km/h... oh boy.

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.

Hello,
As you already mentioned, it becomes critical if the material has been damaged in any way. Unfortunately, it's impossible to assess that from here. Personally, I wouldn't drive with it like that. However, there are other things one could consider.

If an object is very thin, smooth, and pointed (like a small nail, for example), there's a high chance that it has only displaced the tissue or, at worst, caused a minor tear. That's why these kits often include something sharp to displace the tissue without damaging it (which I don't see in your picture, but that's how they usually are). This allows you to gently enlarge the opening in the tissue so that the plug can fit through.

If it's something thicker with a rough surface (like a screw, for example), there's a high chance that it has damaged the tissue significantly. This could happen either when inserting it or when removing it. In that case, the situation is serious...

In my opinion, the fact that the tire is losing air is a minor issue. I would be more concerned about it bursting at high speeds.

I once talked to a tire expert about this topic, and he said that the maximum speed you can achieve with a plugged tire is still not a problem for long distances.

He uses these things every day, and so far, no one has reported any subsequent damage.

Personally, I would only keep the "Pelle" as a spare tire; when driving fast, I would always have to think about the stopper...

Sven.

Sven,

You know that the "mushroom" from ReifenSpezi is different from the part made by mcgregg.

- The "mushroom" is pulled inwards and has a large surface area that holds it in place.

- The mcgreggs part is somehow inserted from the outside, because I can't possibly reach the inside of it at night in the forest.

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.

... at the tire shop where I was, they also used a similar "rod" to insert this rubber plug from the outside into the tire that was still mounted on the rim. (I saw it happen).

Perhaps there are different or similar systems in place?

But as I said, I wouldn't be able to erase that from my memory, and I would always have a "pencil" in my pants .

Sven.

I'm familiar with that technique using a mushroom-shaped tool; it's usually used to pull the tire off from the inside out. It definitely works if the hole isn't too large or frayed.

However, if there is any damage on or near the sidewall, I would recommend having a new tire installed.