I have done dozens of tractor tires. This 15.5 - 38 is giving me some problems. Tire/rim is on the tractor. The rim is not rusty. Put a new tube in the tire. Had problems on both the outside and inside of the rim where about 16 inches wouldn't entirely push outward on the bead area of the rim. Finally got the outside to pop out. Inside still will not go with about a 12 inches showing a gap. Been using dish soap to get it slippery. Then tried vegetable oil. Drove the tractor a mile. Tires are not new but the inside carcass is perfect. No damage to outside except for some checking, but still didn't want to go over 25 psi at inflation to get the tire on the bead. Should I go more psi? My last two options are to keep breaking the tire off of the inside and try again and again and lastly push the tire back enough to get a angle grinder in with a wire brush to smooth it up more. Remember the rim is not rusty. Any more tricks I should be using? Thank you.
- Thread starter andy r
- Start date
Janicholson
Well-known Member
As lubed up as it is I would try one more thing. Using an oak (hardwood) block at least a 2X4 size about a foot long, try hitting the rim toward the axle using a 2 pound hammer. This can free it enough to have it jump out in place. If no glory, try driving it over a 6X6 or equal with less pressure. With a lot of pressure the bead in contact has more stress on it and it might not move as easily. Try maybe 8 psi over the block to flex the sidewall. Jim
teddy52food
Well-known Member
Break it down again & start the spot where it didn't go on 1st. Use plenty of lube on the rest.
redforlife
Well-known Member
As others have said.
You might also just simply drive them a little at about half pressure. 7 or 8 lbs. And fluctuate the air pressure. And see what happens. At high pressure, your pretty much hoping that the air pressure alone will push it out. Because the tire is not going to have much pliability and not have much limber give to it on the count of the high pressure. Kind of stuck in solid mode on the rim, if you will. Lower pressure will allow the tire to move in other ways, other than only out. Which it may need to do, to come out. Like as in, it may need more than the 12 inches that is not coming out to be able to move. It might need the other side (half way around) to fall down and fit tighter into the bead at that location, to create enough stretch to bead up what's not beading up. And it won't do that with the higher pressure you got in it. High pressure is going to keep that out, where it might need to come in a little. Low pressure and driving, will help the tire find itself into place, where as high pressure is apt to just keep it where it's at if it's not popping out with the high pressure.
I am with you. 20 or 25 psi is about as high as I dare to go, when over inflating.
You might also just simply drive them a little at about half pressure. 7 or 8 lbs. And fluctuate the air pressure. And see what happens. At high pressure, your pretty much hoping that the air pressure alone will push it out. Because the tire is not going to have much pliability and not have much limber give to it on the count of the high pressure. Kind of stuck in solid mode on the rim, if you will. Lower pressure will allow the tire to move in other ways, other than only out. Which it may need to do, to come out. Like as in, it may need more than the 12 inches that is not coming out to be able to move. It might need the other side (half way around) to fall down and fit tighter into the bead at that location, to create enough stretch to bead up what's not beading up. And it won't do that with the higher pressure you got in it. High pressure is going to keep that out, where it might need to come in a little. Low pressure and driving, will help the tire find itself into place, where as high pressure is apt to just keep it where it's at if it's not popping out with the high pressure.
I am with you. 20 or 25 psi is about as high as I dare to go, when over inflating.
For years I used Dish soap until I got a tire that would not seat. Then tried Murphys tire mounting compound. It is 10x slicker than dish soap and you can rub it on like a grease. Lube both bead and rim. I also second deflating and trying again seating the area that won't go first. If it still won't go, you might want to get a locking inflation chuck so you can stand back 5-10' and give it more pressure. Give it 4 more pounds, check back in an hour. Repeat.
dr sportster
Well-known Member
I use 90 psi to seat a bead
I had one that would not seat and it was a new tire. Finally bought a pail of tire seating compound from Auto Zone of all places. It worked great. You'll need to deflate that tire to get enough room to work the compound in there, it is the consistancy of lard. Sitting out in the hot sun is a good idea also but it's not easy to get the sun on the inside of a wheel unless you take it off the tractor. You'll be surprised how much a tire grows in size and how much the pressure increases while sitting in the hot sun.
Dave
Dave
Jim.ME
Well-known Member
- Location
- central ME
Get some tire mounting compound (Murphy's, TruFlate/Camel "Stuff", Frey Lube, etc. Push the tire away from the bead area and give the rim and tire bead a abundant coating all the way around. Don't worry about getting too much on, the excess will not hurt a thing, in fact, most compound have some rust inhibiting additives.
Gary Mitchell
Well-known Member
When I ran into one that refused to mount up, no matter what, I took a bar of ivory soap and rubbed it all over the bead and the rim. It slipped right on without a pop. I was amazed. gm
used red MN
Well-known Member
- Location
- Coon Rapids, MN
USING 90 PSI in a 38 inch rear tractor tire is ..VERY DANGEROUS.. I REPEAT ..DANGEROUS.. DO NOT DO THIS!!!!! This guys replies are usually on track but he must not have had his morning coffee yet. WOW, pressures near that may be okay for 15 to 17 inch tire if it is rated for 50 psi inflation, still would want it in a cage. I saw a semi truck tire blow up on a young man where I was working. He was lucky to regain use of his leg.
caterpillar guy
Well-known Member
Deflate put some Murphy's tire mounting compound on it rub around the tire bead and rim. Reinflate to about 35 Psi or until the tire seats less than the 35PSI. It will probably slip right in place then. I also try to have the tire about the correct height for the inflated tire. This reduces the need for bead seating problems from to low or to high.
Rag-packer
Member
I would not put any more pressure than you have been [30-35 psi] 90 psi is too much for a check cracked sidewall.
Some of these guys finally got it. Get yourself real tire lube. The best is Bowes Big Blue, NAPA has some that is decent, its called Ruglide. Use plenty. As I've said in many posts, dish soap AIN'T slick enough to Mount tires. How do I know, I spent over 20 years mounting farm, semi, car, tires.
showcrop
Well-known Member
I had one once that would not snap out for the tech at the commercial tire store. He had put on a lot of Super Duper Maxi Force 100 Space Age lube. He went a little more than the store max allowed 40 lbs too. He told me to take it home put it on and reduce pressure to 5 lbs. and drive it around. I did it popped right out.
BarnyardEngineering
Well-known Member
- Location
- Rochester, NY
He's only going up to 25PSI.
Blackhole49
Well-known Member
- Location
- White Lake MI
X25!!!!! Sportster is beyond left field on this one.
old
Well-known Member
- Location
- Camdenton Missouri
Sure would not want to see you doing that. Good way to take your head off your shoulders. TIRE say right on the side wall max inflation for seating the beads. Going over that is asking to get hurt or DEAD.
Similar threads
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.
Copyright © 1997-2024 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy