De-rimming a tire - Page 2 - PeachParts Mercedes-Benz Forum

funola · #16 10-18-2011, 10:23 AM

[QUOTE=Skippy;2811951]Orv's way works, but you have to break the bead first. The traditional way is with a slide hammer.QUOTE]

I have never heard of using a slide hammer to break the bead before. Can you describe the procedure? Seems like a slide hammer on something elastic like a tire bead is not effective.

Zulfiqar · #17 10-18-2011, 11:27 AM

if you have 130 tires then you might want to consider welding up a press from scrap metal bits. its real simple.

a flat rectangular base with a tall triangular section at the front edge, a lever with a strong bolt through the top of the standing triangle and another levering triangle on the handle with a 90 degree angle piece rounded to press on the bead by the rim. Its real cheap and used all over in 3rd world countries where a tire changer is considered a luxury. One shove and the bead pops, flip, do same on other bead, lever one bead over the tire and hammer the tyre off with a heavy iron mallet, do once again with other bead.

lutzTD · #18 10-18-2011, 12:22 PM

in my younger days I have done it by breaking the beads on both sides by jacking the car with the jack on the tire as close to the bead as possible, dont forget to remove the valve stem. once you get both broke squish the tire on one side so that it goes in the groove in the middle of the wheel, then use the pry bar on the opposite side to get the tire over the rim, second one is easier since you dont have to squish the tire. for that many I would get the bead breaker tire removal tool stand from Tractor Supply, then sell it off when your done. how are you going to get rid of so many tires.....

http://www.tractorsupply.com/vehicle-maintenance-accessories/tires/vehicle-tire-repair/larin-manual-tire-changer-1000142?zoneMarketInfo=2-6&reqUrl=TopCategoriesDisplayView&langId=-1&storeId=10551&lbzipcode=33548&catalogId=10001&ddkey=http:LocationBasedPricingCmd

Orv · #19 10-18-2011, 01:26 PM

Quote:

Originally Posted by Skippy

You jack it up and then let it down so that the frame presses on the tire, but not the rim.

I've heard of people doing this by jacking the car up, sliding the tire under, then easing it back down so the brake disc presses on the tire. I imagine there are as many makeshift ways to break a bead as there are shadetree mechanics.

Skippy · #20 10-18-2011, 03:51 PM

[QUOTE=funola;2812190]

Quote:

Originally Posted by Skippy

Orv's way works, but you have to break the bead first. The traditional way is with a slide hammer.QUOTE]

I have never heard of using a slide hammer to break the bead before. Can you describe the procedure? Seems like a slide hammer on something elastic like a tire bead is not effective.

You jam the "spoon" part of the slide hammer between the rim and the bead and start hammering. Hearing protection is recommended. After you get the bead broken a little in one spot you move a couple inches and keep doing this until you get the bead broken. Then you flip the tire over and repeat with the other side. I've had some go pretty quickly this way and others take a LONG time.

funola · #21 10-18-2011, 03:58 PM

I just de-rimmed a tire with a knife and Sawzall. Took less than 5 minutes with no physical effort. I was trying different things like a Wiss sheetmetal cutter and hammering the knife with a wooden mallet which didn't work too well. I bet I can do the next one in 2.5 minutes. I took some pics will post what I did later.

47dodge · #22 10-18-2011, 06:55 PM

Harbor feight sells a manuel tire machine real cheap, has a bead breaker built in.

funola · #23 10-18-2011, 07:26 PM

OK. This procedures destroys the tire and the rim for the aluminum. Each rim is worth about $8 to $12 depending on weight at current scrap metal prices.

With a sharp sturdy knife, cut a slit in the sidewall from bead to tread on both sides. Sawzall the bead and rim (took about 1 minute each bead with an 18 TPI bimetal blade). I think a 14 TPI blade will be faster. Next, cut the tire tread with sawzall from slit to slit (takes about 30 seconds). Mine was a steel belted and it cut through with no problems.

Tire lifts off easily once it's been cut

layback40 · #24 10-18-2011, 07:36 PM

Quote:

Originally Posted by funola

I just de-rimmed a tire with a knife and Sawzall. Took less than 5 minutes with no physical effort. I was trying different things like a Wiss sheetmetal cutter and hammering the knife with a wooden mallet which didn't work too well. I bet I can do the next one in 2.5 minutes. I took some pics will post what I did later.

The tire looked good enough to go on a trailer but now its junk.

It is much easier to just take the tire off the normal manual way.

A skill that is learned by few these days.

funola · #25 10-18-2011, 10:21 PM

Quote:

Originally Posted by layback40

The tire looked good enough to go on a trailer but now its junk.

It is much easier to just take the tire off the normal manual way.

A skill that is learned by few these days.

That tire is at least 20 years old with sidewall damage that cannot be repaired.

You mean you can get the tire off in less than 2.5 minutes the normal manual way??? If so, I'm all ears.

funola · #26 10-18-2011, 10:26 PM

Quote:

Originally Posted by fruitcakesa

[/B]
I tried that and it was really tough just getting it started as the rubber melts and gets sticky, the steel belts grab the saw blade and the whole tire shakes but little cutting occurs. I did manage to cut through but the darn bead still needed breaking before the tire would come off.

Hmmn, I cut right through the beads into the rim without any problems. I guess I don't understand what you did.

Edit: I think I know what you did. You broke the bead off the rim before using the sawzall, that's why it was floppying around and not cutting. The trick is to leave the beads on the rim and cut through the bead into the rim.

funola · #27 10-18-2011, 10:30 PM

Quote:

Originally Posted by dropnosky

.........................For the trouble this would be, personally id just have a cheapo tire shop just dismount them in a few minutes and make a little less money on the aluminum, but save a bunch of time

Going to a tire shop takes time and fuel. The closest one is 5 miles away. They don't do it right away so it's another trip to pick it up unless you want to sit around and wait and pay$$$. I got the tire off in less time than it takes to drive to the tire shop.

funola · #28 10-18-2011, 10:57 PM

Cutting the sidewall with a knife is easy. Cutting the tread with steel belt not so easy (with a knife). I tried hammering on the knife and broke the knife.

I then tried a Wiss sheet metal cutter. It worked but was slow because the jaws are not very wide and only cut a 1/4 in at a time. The Sawzall ripped right through it. The trick is to not break the bead so the tire does not flop around while you're cutting.

vstech · #29 10-18-2011, 11:07 PM

nice job!
of the Many TIRES I've tried, the sawzall just jittered the bead... wouldn't cut it...

layback40 · #30 10-19-2011, 06:43 AM

Quote:

Originally Posted by funola

That tire is at least 20 years old with sidewall damage that cannot be repaired.

You mean you can get the tire off in less than 2.5 minutes the normal manual way??? If so, I'm all ears.

If the bead is broken off the rim, I could do 2.5 minutes.
Learned to do it 40 years ago.
Once you have done it a few times, you can get them to fall off.
A couple of good leavers & a small sledge hammer gets them off quick. A bit of your WVO on the rim edge helps as well.