You have gotta see this .

[Eagleview]

YouTube - Wheels of Fire Training Video

I was gob smacked while watching this .

 

[powerstroke444e]

Wow!!!!!!! I have been lucky, everytime I think I know what is safe you find a new to scare me. I have heard the whistle from the heat with the valve steme removed many times but never again. Thanks for the post.

 

[Abe460]

OMG!!!! did he say 22 hrs later? :shocked: If that's true, then what's to say the tire you're standing next to didn't get hit by lightning lastnight?

 

[carpenter383]

Man! I've never heard of that, thanks for the link Iron Horse.
I have seated tire beads by spraying carb cleaner inside the rim and lighting it, but I had no idea of the danger.
I wonder why drag cars don't have this problem? There is alot of heat generated from doing a burnout.

 

[Scooby074]

Scary stuff. I never thought about it to be honest.

I went to trade school with a guy that had a split rim bow up on him. It almost killed him. Split his head open so i knew the dangers of a tie blowing when being seated , but i didnt think about the dangers from excessive heat.

Thanks for the eye opener.

 

[Abe460]

I wonder why drag cars don't have this problem? There is alot of heat generated from doing a burnout.

I would think most of the heat from a burnout is left on the pavement. This demonstration seems as if the heat introduced to the metal of the wheel can't escape.

It's just hard to believe that heat would re-seat the bead in some cases. We had a company vehicle's hub cease up pretty bad...just wonder if that could have been real bad for the guys.

 

[firedog]

I looked up the SADT (self accelerating decomposition temperature) for the material used in tires. It's 185 deg.C (365 deg. F).

Doesn't seem like much to get the chemical reaction in the tire going.

 

[Mousefield]

The stuff we learn about, never gave much thought to heat and tires, then blowing up.

 

[Wheatland KB]

Thanks for posting that. I have never welded on a tire but likely wouldn't have hesitated to put a small bead for some reason or another. Not now.

 

[JB4310]

Pyrolosis! That's crazy, never imagined that, even deflating or breaking the bead is not enough to prevent it?

I would never heat an inflated tire, since I almost blew my head off from cutting a pressurized vessel with a torch, I have "pressure vessel exploding phobia" but I would think deflating the tire would be enough of a precaution, I guess not.

Thanks for the safety warning.

JB.

 

[Travelover]

Very interesting. Scary that a dragging brake can set this off. I wonder if driving on a severely under inflated tire will do the same thing.

 

[TractorJunkie]

Wow, who would have thought from 2-3 seconds of welding.

 

[Eagleview]

Very scary stuff , I thought it may prevent someone hurting themselves , welding a valve guard onto a tubeless rim etc .

 

[dcyrilc]

Very interesting. Scary that a dragging brake can set this off. I wonder if driving on a severely under inflated tire will do the same thing.

I don't think that would create enough heat in the rubber to start the process. A seized bearing on the other hand can create enough heat to start a fire or get red hot.

 

[2manyrocks]

So your car catches fire and there's no telling when the tires may explode. You weld on your rim for 2-3 seconds and the tire blows 2 minutes later with no visible warnings from the tire before it happens. You know it could happen so you deflate your tire. but leave it on the rim and the pressure makes it reseat and blow up anyway.

spooky, spooky, spooky

Wonder what else besides a tire would do this?

 

[Ridgewalker]

My stepdad owned a tire shop when I was a kid. There was a hole in the ceiling above the tire changer that was perfectly round. His "boys" claimed they had no idea how it happened.

Big tires are no fun to work with.

Thanks for posting that video...who woulda thunkit!

 

[Defective]

Very interesting. Scary that a dragging brake can set this off. I wonder if driving on a severely under inflated tire will do the same thing.

Ever run over a road gator?

Most people think those are caused by failed retreads. Not true. Take an up-close look some time. You'll note that they generally include the wire as well as the tread material.

Most (possibly all) blowouts on truck tires are caused by running under inflated and overheating the tire.

 

[Travelover]

Ever run over a road gator?

Most people think those are caused by failed retreads. Not true. Take an up-close look some time. You'll note that they generally include the wire as well as the tread material.

Most (possibly all) blowouts on truck tires are caused by running under inflated and overheating the tire.

Excellent point. I have noticed the tire cords sticking out.

 

[20 20]

Ever run over a road gator?

Most people think those are caused by failed retreads. Not true.

I did have a couple tires blow because of failed retread, I never would put a retread on the front, at the time most would not. This was on a big rig.

Take an up-close look some time. You'll note that they generally include the wire as well as the tread material.

Most (possibly all) blowouts on truck tires are caused by running under inflated and overheating the tire.

I do agree a lot of blowouts can be because of wrong pressure, but not all or even most. I had tires blow because of foreign objects {biggest problem} and bad retreads. This was back in the early 90's so maybe things have changed, and even though I used retreads I HATED THEM! Cost was the only reason I used retreads and I NEVER would use them on the fronts.