I just bought a Dunlop KT331 radial from Tires unlimited.com for my front left rim. I took it to my buddy who owns a tire shop to have it put on. We could not get the tire to bead.Well we got the tire to bead but not fully seal. We cleaned and done everything you can do to the rim. We put a bunch of bead sealer on it and everything. But it still leaks from the 4 pin holes thats on the outside of the rim. I believe those are their to stop the tire from "popping" on a hard landind?? (2 holes on top and 2 directly across the rim) So after trying many times to get it to stop the slow leak at the holes, I took it to a Suzuki dealer to have them put it on. They tried and tried. They didn't understand why it was leaking. The rim is not bent, or damaged. Then the manager came out and told me that he has seen this before. He said it "normally" happens with Holeshot tires. He said that every once in a while a tire comes screwed up from the factory. Is this true?? He said he has never seen it with a Dunlop. Should I call the tire company or try something I don't know about.Any help would be great!!! thanks larry

 

I just went thru this with some new Tires for the rear of my Zilla.
Trust me when I say, the problem is not with your tires.
If you look how the rims are made the bead is formed by rolling the metal lip from outside to inside, this leaves a small gap on the inside of the bead. The holes that you mentioned are there to bleed air that might get trapped in between the metal pieces.
When my old tires were removed we used a tire tool to help break the bead, this left very small (almost unnoticable)indentions in the bottom of the bead area, this is on the diameter of the bead seal, not the the outside lip. When the new tires were mounted they leaked, bad...... After going several places I took the tires to an ATV guy in OKC. He had experience with this and carefully explained what I just told you.
The fix? Leave the tire mounted, put about 5 psi of air in it, take a rubber or deadblow hammer with some radius to the head (a flat one will just create more problems). Feel around on the inside of the rim for the indentations, tap them out with the hammer, as they seal and as you find them the air will stop leaking. I spent about an hour on my two rims. I also used soapy water as I did this to help find the actual spots they weren't sealing in. They haven't lost any air in 3 months now.

 

I ha that same problem....If the rubber mallet don't work,put a small bead of silicone all the way around where the bead is on both side's of the rim that will block off the air plus seal the bead.... It worked for me....