Sidewall puncture on new tire - will this stand the test of time?

I've repaired a few sidewalls and they are all solid. But only if you do it this way: 

https://www.youtube.com/watch?v=jt4J3nq2_Gs

Update: Did 130km / 6.5hr of gravel on the weekend. Including some chunky descents. Ran the tire at 40+ psi (started at 45 and bled some out during the ride.

No issues at all during the ride!

Got back to the parking lot and starting packing up and had a recovery brew with the crew.... TIRE WENT FLAT!

Haha

Got home and pumped it up. There was a leak again at the same spot. No idea what happened.

I'm going to leave it as is and get another pair of tires/wheels up and running (33mm Vittoria Terreno Dry) so they can take over for these if I need them. Then I'll pull the tire and apply a rubber patch to the inside of the tire and see how that works out.

Spreader wrote:U

I'm going to leave it as is and get another pair of tires/wheels up and running (33mm Vittoria Terreno Dry) so they can take over for these if I need them. Then I'll pull the tire and apply a rubber patch to the inside of the tire and see how that works out.

Yup, patch is the way to go.

Sealant doesn't work great on sidewall cuts.  I have had them seal up pretty well (pinch flats), but the sealant doesn't naturally go there.  Sometimes I'll give it a lot of PSI, and make sure the hole is at a low point so the sealant pools there and let it sit there 12 hours.

Update: Ride #2 on these tires was a month ago. I did NOT patch the sidewall. The tires rode for 6.5h /170km and didn't skip a beat. So maybe the sidewall just needed to be moved around and flexed for the sealant to do it's job. Maybe it just tricked me and it's going to fail again...

Now though... I was doing a rotor swap when I found a deep abrasion in the sidewall! Two rides and these tires have given me nothing but grief. What do you think of this?

 
They're holding air, but I can see the treads on the sidewall. I've been told to patch with Shoe Goo and it will be fine. I'll start a separate thread though maybe.

What with these tires? Are they abnormally thin sidewalls? I had Maxxis Rambler EXO before this and for three summers, 3000km they were bullet proof.

Also about these tires: they get slippery quick and slide out - then suddenly the side knobs engage and all is well. But that moment of sliding is scary. I was riding these through corners purposely putting them on the edges so they would bite and stay dug in. They do roll well, but I think for proper "gravel" tires (four wheeler trails, etc) I'll be going back to something with a little more bite on the tread surface.

If you see any damaged threads the casing is damaged.  If you don't the casing may be damaged anyway.  If you apply a patch to the outside of the tire it may protect it from further damage.  Or it may not.  Either way it will be good until it isn't.  I would consider the tire susceptible to a blowout and I wouldn't take that risk in a race.  Since a blowout under any circumstances could be dangerous I wouldn't take that risk most anywhere else.

If I were you I'd use a radial patch for motorcycles with that slime tire glue. Cut the patch to cover the scratch on both sides of the tire & glue it with he glue. Worked well for me with a hole the other month.