How are tires sealed to a rim?
How are tires sealed to a rim?
Is it done by pressure, or is there some sort of sealant used to hold them to the rim?
run flat tires usually use some sort of rigid inner liner, or very stiff sidewalls to support the weight of the vehicle.
if the bead surface of the rim is scratched or damaged, then you have to use this rubbery black goo [bead sealant] on the bead surfaces before you inflate the tire on the machine.
if the bead surface of the rim is scratched or damaged, then you have to use this rubbery black goo [bead sealant] on the bead surfaces before you inflate the tire on the machine.
I have removed tires from rims before by hand. I used dish soap and a plastic wedge. Oh yeah- and a lot of strength.
I just wondered if there was a tool- I would envision a growbar made of plastic- that would make it easire. What I would REALLY like is a pair of the old sliding rails that were attached to the bottom of skateboards. THey were hard enough that they would help pry, but soft enough to not damage the rim.
Anyway, it was a thought.
I just wondered if there was a tool- I would envision a growbar made of plastic- that would make it easire. What I would REALLY like is a pair of the old sliding rails that were attached to the bottom of skateboards. THey were hard enough that they would help pry, but soft enough to not damage the rim.
Anyway, it was a thought.
I have changed tires on heavy machinery, agriculture equipment, semi truck, hand truck, golf cart, hot rod, forklift, sweeper, wheelchair, imports, domestics, bicycle, motorcycle, and small airplanes. I can do all these with proper hand tools(not craftsman screwdrivers, mind you, although I've done that too) but proper tire bars.
As the god of this realm, I instruct you to NEVER attempt to change tires on your own.
I use proper tire bars for road service. Like at 2:30 last night, on the Interstate. It takes practice to be effective and safe at changing tires by hand. I have about a decade of practice.
Pay to have it done. It ain't like changing your oil. The explosive force of a tire can kill you.
I've blown up a number of tires also. Ive seen a 5' tall, 2 ' wide cage be altered to roughly a 3' tall, 4'wide cage, by the explosive force of tire rupture.
Do not use lighter fluid to seat beads. I've seated beads doing this, and I've also blown a 150lb tire/wheel into the air high enough to bring the fear of God into me. Cheetah bead seater, ratchet straps, murphy's soap, all tools of the trade. Don't risk your life, in the hopes of inflating a tire.
Modern auto wheels have a 'bead lock' of sorts.
go here http://www.rsracing.com/tech-wheel.html
As the god of this realm, I instruct you to NEVER attempt to change tires on your own.
I use proper tire bars for road service. Like at 2:30 last night, on the Interstate. It takes practice to be effective and safe at changing tires by hand. I have about a decade of practice.
Pay to have it done. It ain't like changing your oil. The explosive force of a tire can kill you.
I've blown up a number of tires also. Ive seen a 5' tall, 2 ' wide cage be altered to roughly a 3' tall, 4'wide cage, by the explosive force of tire rupture.
Do not use lighter fluid to seat beads. I've seated beads doing this, and I've also blown a 150lb tire/wheel into the air high enough to bring the fear of God into me. Cheetah bead seater, ratchet straps, murphy's soap, all tools of the trade. Don't risk your life, in the hopes of inflating a tire.
Modern auto wheels have a 'bead lock' of sorts.
go here http://www.rsracing.com/tech-wheel.html
It would take just as much time to have to drive the loose wheels/tires to the shop to have them dismounted, mounted and aired up, as it would to take them there for inflation. It's a wash!
You have to make the trip to the tire shop anyways, right? Please, I beg you, let a tire guy do the work. If you follow hitman's advice and drop some cash(before work is done) you're making an investment in the future. We remember the people that give us money, and we go above & beyond for guys that see value in paying for good service. Win/Win, and all for a $20
You have to make the trip to the tire shop anyways, right? Please, I beg you, let a tire guy do the work. If you follow hitman's advice and drop some cash(before work is done) you're making an investment in the future. We remember the people that give us money, and we go above & beyond for guys that see value in paying for good service. Win/Win, and all for a $20
I would have to make 2 trips, because the I is full of rims and tires right now.
I most likely will pony up the $ and pay them. I am a DIY guy, for those things that CAN be done @ home, so I thought that i would ask.
THe $20 idea ALWAYS works. Especially if I drop the rims off and tell them to do it any time that day, then pick the seperated rims and tires up that evening.
I would rather see the tire guy pocket the $20 than to have the tire place take their cut...
I most likely will pony up the $ and pay them. I am a DIY guy, for those things that CAN be done @ home, so I thought that i would ask.
THe $20 idea ALWAYS works. Especially if I drop the rims off and tell them to do it any time that day, then pick the seperated rims and tires up that evening.
I would rather see the tire guy pocket the $20 than to have the tire place take their cut...
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C-Kwik
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SmithSR wrote:Do not use lighter fluid to seat beads. I've seated beads doing this, and I've also blown a 150lb tire/wheel into the air high enough to bring the fear of God into me.
Wanna explain this one? I need a new trick to hurt myself with next 4th of July. Burning my hand on a roman candle apparently isn't cool enough.
The bead wire is where the bead gets it's strength from. Each manufacturer has it's own tricks and ideas of what makes a good bead wire.
Many tire maker's websites advertise a given tire's construction, some searching on major brand sites will explain in detail.
A tire is not intended to remain flexed in the position people 'stretch' them to, so all bets are off as far as a retailer or manufacturer is concerned.
Many tire maker's websites advertise a given tire's construction, some searching on major brand sites will explain in detail.
A tire is not intended to remain flexed in the position people 'stretch' them to, so all bets are off as far as a retailer or manufacturer is concerned.
here is a clear example of the bead 'lock' or 'safety hump' on an R33 wheel.
When you inflate a tire, the air pressure forces the beads of the tire, over this small lip, forming an airtight seal. It's sometimes hard to break this seal, even with no air pressure in the tire. The bead wire wrap is very strong. when the bead is properly seated onto the wheel, this hump keeps the bead in place.
Sometimes under hard cornering especially on a stretched tire, the weight loaded onto the outside edge of the stretched tire can overcome the air pressure along with the 'safety hump' and dislodge the bead from the beat seat area. This would instantly deflate the tire, damage your wheel, and ruin your day.
When you inflate a tire, the air pressure forces the beads of the tire, over this small lip, forming an airtight seal. It's sometimes hard to break this seal, even with no air pressure in the tire. The bead wire wrap is very strong. when the bead is properly seated onto the wheel, this hump keeps the bead in place.
Sometimes under hard cornering especially on a stretched tire, the weight loaded onto the outside edge of the stretched tire can overcome the air pressure along with the 'safety hump' and dislodge the bead from the beat seat area. This would instantly deflate the tire, damage your wheel, and ruin your day.
We've removed tires before... with the blade of my dads medium sized DC series Catipillar. That works fairly safely after everything is lined up because of the brush cage, and that huge diesal motor and, blade between the tire and us. Just don't crush the wheel.
I've seen guys from farm equipment stores change rear tractor tires... on the tractor. That doesn't look fun nor worthwhile.
So is it the air expanding with nowhere else to go that makes the loud "pop" when a tire is seated?
I've seen guys from farm equipment stores change rear tractor tires... on the tractor. That doesn't look fun nor worthwhile.
So is it the air expanding with nowhere else to go that makes the loud "pop" when a tire is seated?
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C-Kwik
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phenryiv1 wrote:^^^^^^^^^^^^^
Heating the air inside of the tire (through igniting it) makes it expand, thereby sealing it to the rim. If yo uhave too much lighter fluid, you can blow the tire or pop the bead.
I understand the concept of lighterfluid bead sealing. I was really being facetious more than anything and wanted to know exactly what you did to create this "incident".
C-Kwik, not all tire/wheel assy mount up in the same fashion. Where the regular car wheel has a safety hump to help keep the bead seated properly even in low air pressure conditions...
semi truck tires do not have this feature. Very large mud tires, in 16.5" wheel selection, do not have this safety hump feature. Often times, when mounting a massive super swamper tire onto a wheel let's say, 12" wide, when uninflated the beads will sit about 4" away from the outer edge of the wheel, where the bead will rest upon inflation. Basically, it's a big gap you've gotta overcome in order to get the tire to air up. There are a number of methods to get the beads seated, but since we're dealing with such a massive tire, with lots of room for error, it is possible to blast the tire with air(cheetah beat seater), ratchet straps to squeeze the tire and lessen the gap, or other method... anyways, it's possible, after getting the tire to begin it's seating process, for the tire's bead to seat at an angle that will allow the bead to contain air, up to a point, then slip off over the rim edge with explosive force. This can happen, literally, in an instant.
So
For example (if you try this you are foolish, risky, dangerous, and do not value your life. let a tire guy risk his life, not yours) Stand next to a massive tire/wheel that is laying flat on the ground, spray lighter fluid into the gap between wheel/tire, apply the air hose to valve stem, stand back and toss lit match into the gap.
It'll go FOOP! and seal, or it'll go BLAAMMMO! and launch into the air, and could hit you or land on you and kill you.
In truth, you should never REALLY need to use this method, but out on the road without every tool, with less than ideal air pressure, with nobody to help you if you need it, one can get risky and take chances. Don't try it, just to save a few bucks. From experience, it's not worth it.
I've blown up plenty of other tires too. Nothing to be proud of. My coworker lost his jaw and half the bones in his face, had to spend weeks in the hospital, underwent several surgeries, and after two years, is finally back to his old self, almost. A 200+ lb tractor tire blew up, literally, in his face and nearly took his life. Now he has a face full of fake teeth, a jaw made mostly of steel, and skin grafts. Still worth it to change your own tires? Let us do it instead.
semi truck tires do not have this feature. Very large mud tires, in 16.5" wheel selection, do not have this safety hump feature. Often times, when mounting a massive super swamper tire onto a wheel let's say, 12" wide, when uninflated the beads will sit about 4" away from the outer edge of the wheel, where the bead will rest upon inflation. Basically, it's a big gap you've gotta overcome in order to get the tire to air up. There are a number of methods to get the beads seated, but since we're dealing with such a massive tire, with lots of room for error, it is possible to blast the tire with air(cheetah beat seater), ratchet straps to squeeze the tire and lessen the gap, or other method... anyways, it's possible, after getting the tire to begin it's seating process, for the tire's bead to seat at an angle that will allow the bead to contain air, up to a point, then slip off over the rim edge with explosive force. This can happen, literally, in an instant.
So
For example (if you try this you are foolish, risky, dangerous, and do not value your life. let a tire guy risk his life, not yours) Stand next to a massive tire/wheel that is laying flat on the ground, spray lighter fluid into the gap between wheel/tire, apply the air hose to valve stem, stand back and toss lit match into the gap.
It'll go FOOP! and seal, or it'll go BLAAMMMO! and launch into the air, and could hit you or land on you and kill you.
In truth, you should never REALLY need to use this method, but out on the road without every tool, with less than ideal air pressure, with nobody to help you if you need it, one can get risky and take chances. Don't try it, just to save a few bucks. From experience, it's not worth it.
I've blown up plenty of other tires too. Nothing to be proud of. My coworker lost his jaw and half the bones in his face, had to spend weeks in the hospital, underwent several surgeries, and after two years, is finally back to his old self, almost. A 200+ lb tractor tire blew up, literally, in his face and nearly took his life. Now he has a face full of fake teeth, a jaw made mostly of steel, and skin grafts. Still worth it to change your own tires? Let us do it instead.