CaptMike

Has anyone had a tire blow the rim, and then successfully remount it again? I switched from studs to my non-studded tires, and wasn't as diligent as I should have been cleaning the bead of one of them. At least that is what I suspect. It sealed perfectly, and I filled to just below the max of 30 psi. Apx 25. I was all happy, and had the tire on my work bench next to me, while I was doing something else, and BOOM!!! I was impressed how loud it was. Thank God my hearing is less than perfect. The portion of the bead that must have been the section that blew, was quite distorted. I immediately thought I needed new tires. After looking around, it seems they are hard to come by. So today I thought I would try to put a ratchet strap around it, and try to seal it. It looks like even with that, I can't get enough to the bead to make contact with the rim, to get a seal. At least with two hands. Any suggestions would be appreciated. The closest LBS to me is about an hour and a half drive, or I would probably hand it off to them. There is a lot of life left in the tires, so I would like to salvage them. Thank you.

1. 

Crankycrank

I have never heard of a way to fix a tubeless/kevlar bead that has been mangled up like that. You could try running it with a tube and see how that goes if you don't want to throw it away. Keep an eye on it while inflating and check for any tube creeping under the damaged bead and take a few laps near your home to test it and check again, I don't have high hopes for the tire though as it looks like the casing has a bulge which indicates damage as well. Might want to try a warranty claim as it might just be a defective tire.

squirtdad

possibly use a tube? a thought, no hands on experience

Iride01 

I've had them blow off. But it was pretty much on purpose. Use to be when I had a tire that wouldn't seat to the witness line, then I'd use excessive pressure to seat them. In this case it was a 27" tire and about 150 psi on a smooth bead rim. It is loud. Sure don't want to have a hand nearby either. I did use the tire afterward and it worked fine.

Your description sort of makes me wonder it you did check the witness line or that maybe you had the tube caught in the bead if this was a tubed tire, though I'm thinking not. 26" tire? You are certain it's the correct 26" tire aren't you. They come in a confusing number of different BSD's.

However the bead edge of your tire looks like it might be damaged. I'd probably toss it. Though I wouldn't rule out that I might just try mounting it and seeing what happens. I've never had a bad experience flatting on a bike. Even when the entire side wall of a 20 year old tire split while riding at a decent speed.

All my experience is with tubed tires though. Not certain if it'd make any difference if that is tubeless.

Badger6

Looking at the photo you provided that tire has no life left in it.

Based on your description, I assume you had them set up tubeless, which requires a good bead to get set. I am seriously skeptical that they blew off because you didn't clean the bead well enough. And, the damage to the bead likely didn't happen when it blew off, at least not all of it. I hear you on the tread having life, but sometimes, ditching a tire and replacing it is a far better (safer and less time consuming option) than trying to make a damaged one keep working.

CaptMike

They were tubeless. I found and ordered front and back Maxxis Minion's in the same size, 27.5 x 3.8. Couldn't find the Vanhelga's. I may not air them up quite so much when installing Thank you all for the replies.

prj71

Two things:

1.) That tire stretched and will no longer work.

2.) There is no way you should have aired up a fat tire to 30 psi. Max should be 15. Especially on a HED rim.

CaptMike

I get that impression, although it says max 30. I got to about 25. Eye opening, though. Why especially HED rims?

Badger6

HED specifies the max psi of 20 on their Big Deal rims.

CaptMike

My bad. I see that now. Appreciate the heads up.

prj71

It's actually 14-15psi. Upper Right corner indicates 14 psi. Step 4 indicates 15 psi.

https://store.hedcycling.com/content...structions.pdf

smd4

I'd love to see a pressure gauge that can measure one psi.

prj71

I have two of them. But I'm not sure what one psi has to do with this thread.

https://www.amazon.com/Accu-Gage-Mil...s%2C203&sr=8-6

smd4

Thanks. I wonder how much just measuring the pressure with that gauge will reduce the pressure in a tire.

To answer your question, one psi can apparently be an issue: See?

prj71

Not enough to worry about.

Lol. I see what you are saying. When HED specifies 15 psi I'm sure they are being slightly conservative in the name of safety.

Badger6

Interesting..page 6 here says 20.

CaptMike

HYKWIK

Spot on . Perplexed why so many riders overinflate tubeless as it negates many benefits.

CaptMike

When I change tires and set the bead, I air it up and let it sit, to see if it loses any air. When I ride, I am in the 10-12 psi range, depending how much sand I expect to run into. Being 6'4"/250, I don't like to get the pressure too low. I can guarantee when I put these new tires on, I will be staying below 20 psi on install.

CaptMike