Tires falling of the rims

[KenB2920]

Ok, I have had a B2920 that I put 285 hours on and my current L3540 tractor has about 150 hours. Although majority of the time has been in summer, they have had their fair share of winter work. Neither tractor has had an issue with their tires.

In the past week it has been cold here in Michigan. While my tractor is in the shop they gave me a loaner. The L5030 and while out on a cold night I was working and the tire came of the rim. I figured this was a fluke and may not have noticed the low air pressure. I remounted the tire and its been fine since.

My neighbor just took delivery of his New B3000 YESTERDAY!!! After deliver he drove it and with in 1 hour the tractor sits with one rear tire off the rim. I was not in the area so I wasn't able to help. He sent me a message saying the dealer was on the way to fix it (Great dealer 2 miles away). So, they fix it and he is back being a happy tractor guy. As I came home last night, I see his tractor for the first time sitting on the road with and he is no where around. I pull up and see the tire off the rim. I sent him a text and he was "LESS THAN HAPPY". He said this time it was the other rear tire. I got it on my trailer and dropped it off at the dealer. Unfortunately the dealer is closed today and they wont be able to service it until Monday. Naturally he will be out of town for the week and he needs it today since it snowed.


OK, all the tires mentioned are R4's. However, If anyone else has had these issues, let me know what causes it. I was assuming I just didn't see a slow leak. The dealer told him is was due to frigid temps. If this were the case, why do I see some many R4's out there and have never heard of this. I call BS but want some feedback.

 

[SPYDERLK]

Pressure goes down when its cold and the rubber is harder. A little tire squirm and the bead leaks. New tires are worse because they havnt had the time and work to settle well on the rim. Pump them up to top pressure. Next yr they will be better.
larry

 

[k0ua]

Pressure goes down when its cold and the rubber is harder. A little tire squirm and the bead leaks. New tires are worse because they havnt had the time and work to settle well on the rim. Pump them up to top pressure. Next yr they will be better.
larry

What he said ^^^

 

[Gary Fowler]

I ran a front and rear R4 off my B26 due to low tire pressure. I blame it on me not checking the pressure with a tire gauge. The tires are so thick and so many plies that they will run with virtually 0 pressure in the tire and not even look low (no bulge at the bottom) You cant go by looks on these small tractor tires, you have to check the pressures with a gauge and yes frigid weather will lower the tire pressure a bit, but they do seem to loose some pressure over time. I don't know if this is because of the bead seats or what. My LS doesn't loose any air pressure and I haven't added any air in 3 years, but my Kubota seems to need topping up at least once or twice a year.

It sure would seem that the dealer service guy would have checked all four tires when he came to fix the one, but who knows. If they are leaking air that quickly, then the beads must not be seated properly. The tires should have been pressured to the max setting when installed to firmly seat the tire bead to the rim, then lowered back down to recommended operating pressures.

 

[RalphVa]

I ran the left front R3 off the rim twice before having to install tubes in them to keep the air pressure from going down. Before that, I tried some of that Slime. It worked for a while, but the tire came off a 2nd time, and I installed the tubes. Around 500 hours, I put new tubeless R3s on the front.

Ralph

 

[motownbrowne]

I've never seen a tractor tire come off the rim for during my whole life (I'm young, but grew up around tractors to some extent). Second week of ownership of my Kubota, the front came off the rim right before I was going to use the tractor to unload a pallet of chicken feed from a semi-trailer. Needless to say, I wasn't that excited about unloading it by hand, but the driver helped out. I got the tire back on the rim after I warmed it up. I'm hoping not to have this problem any more, I just figured it was a new tire and a really cold day, about 5 degrees F, which would both reduce PSI and increase the hardness of the rubber.

 

[TSO]

I do find it strange. I'm on my 4th tractor, and I operate in the identical conditions that the OP operates ... I've never seen or heard about tires falling off the rims. I can't imagine it has anything to do with the manufacturer, I mean, Kubota is a reputable company with decades of experience. I can only surmise that the dealer/techs working to install the tires are making some mistake during installation.

 

[motownbrowne]

I don't know what kind of mistake they could be making. My tire didn't have a bead sealant on it, but that shouldn't be necessary. I think it was just the extreme cold in my case.

 

[Tarnold]

Were any of those rears loaded? That could become an expensive flat!

 

[TSO]

I don't know what kind of mistake they could be making. My tire didn't have a bead sealant on it, but that shouldn't be necessary. I think it was just the extreme cold in my case.

I don't know what type of mistake either, but I live in a cold climate as well, and I have never had nor seen a tire fall off the rim like that.

Why does it seem like only Kubota owners are reporting it?

 

[RickB]

Industrial tires have stiff sidewalls and will not necessarily show the effects of low pressure (given the relatively low weights of the average CUT) until the bead lets go. Tire beads WILL NOT unseat in any type of weather IF THE TIRE IS PROPERLY INFLATED. What we are seeing here is technician failure, or operator failure, as the case may be. If a service tech had to come out and re-seat one tire and didn't check the pressure in the other three, that's not good service. If a dealer delivers a new tractor without checking inflation pressures, that's not good service. After a reasonable period of time, it's on the owner/operator to monitor tire pressures. Tires with tubes won't unseat until completely flat.

 

[KenB2920]

Industrial tires have stiff sidewalls and will not necessarily show the effects of low pressure (given the relatively low weights of the average CUT) until the bead lets go. Tire beads WILL NOT unseat in any type of weather IF THE TIRE IS PROPERLY INFLATED. What we are seeing here is technician failure, or operator failure, as the case may be. If a service tech had to come out and re-seat one tire and didn't check the pressure in the other three, that's not good service. If a dealer delivers a new tractor without checking inflation pressures, that's not good service. After a reasonable period of time, it's on the owner/operator to monitor tire pressures. Tires with tubes won't unseat until completely flat.

I really think this is the issue. The tractors I have had haven't had a problem although 4 of those 8 tires were loaded. I am willing to bet my neighbors new tractor tires were never checked by the installer. As for the tractor I was lent, it's been outside and used over and over. I bet they didn't check this one either.

Sent from my iPad using TractorByNet

 

[94BULLITT]

I think the dealer should have checked the tire pressure before they sent it out the door. The tires were probably next to flat for them to come off.

 

[crazyal]

One of my front tires debeaded. The pressure was about 25 psi and it was about zero out. I was trying to break up some ice on the driveway (it rained the night before a cold snap moved in). I was running in 2wd trying to spin my rear tires with ice spike tire chains with the HST response set to fast. I put my Kubota into 4wd and stepped on the hst pedal and because my front wheels were turned I watched the steel wheel spin but the tire didn't. It was pretty much immediate that the tire came off the bead. I just put the loader down and backed up to the house keeping most of the weight off the tire.

Because tractor wheels do not have the rolled bead like an automotive wheel has once it starts to slip or leak down it goes. I've never had an issue since them but I also have inner tubes for the front wheels so if it ever does I'll fix it and never have to worry again. My rear tires already have tubes. Tubes are cheap, ask the dealer to instill them and never worry again.

 

[RickB]

One of my front tires debeaded. The pressure was about 25 psi and it was about zero out. I was trying to break up some ice on the driveway (it rained the night before a cold snap moved in). I was running in 2wd trying to spin my rear tires with ice spike tire chains with the HST response set to fast. I put my Kubota into 4wd and stepped on the hst pedal and because my front wheels were turned I watched the steel wheel spin but the tire didn't. It was pretty much immediate that the tire came off the bead. I just put the loader down and backed up to the house keeping most of the weight off the tire.

Because tractor wheels do not have the rolled bead like an automotive wheel has once it starts to slip or leak down it goes. I've never had an issue since them but I also have inner tubes for the front wheels so if it ever does I'll fix it and never have to worry again. My rear tires already have tubes. Tubes are cheap, ask the dealer to instill them and never worry again.

You will never convince me that happened with 25 PSI in the tire. I know you don't care what I believe, and that's OK, too.

 

[Tx Jim]

You will never convince me that happened with 25 PSI in the tire. I know you don't care what I believe, and that's OK, too.

Me neither. I agree air pressure in tire would have to be below spec's to get unseated.

 

[Gary Fowler]

One of my front tires debeaded. The pressure was about 25 psi and it was about zero out. I was trying to break up some ice on the driveway (it rained the night before a cold snap moved in). I was running in 2wd trying to spin my rear tires with ice spike tire chains with the HST response set to fast. I put my Kubota into 4wd and stepped on the hst pedal and because my front wheels were turned I watched the steel wheel spin but the tire didn't. It was pretty much immediate that the tire came off the bead. I just put the loader down and backed up to the house keeping most of the weight off the tire.

Because tractor wheels do not have the rolled bead like an automotive wheel has once it starts to slip or leak down it goes. I've never had an issue since them but I also have inner tubes for the front wheels so if it ever does I'll fix it and never have to worry again. My rear tires already have tubes. Tubes are cheap, ask the dealer to instill them and never worry again.

Perhaps the remaining tire was 25 PSI, but I also doubt that the tire that popped the bead had 25 PSI in it. Each time I popped one off it was working on a slope and the roll of the slope forced the low pressure tire off the rim. Checking the other 3 found them all low but I suspect not so much as the one that came off. As I stated and RICKB emphasized, R4 tires have such stiff side walls that the relative light weight of the CUTs don't flex the walls and show off a low tire like we are used to seeing on autos and even R1 tires. When I checked mine after de-seating the rear, the other side only had 5 PSI in it and it didn't show any low pressure flexing at all. I think the fronts had about 15 in them. I don't know why the front came off several months later, but supposedly it was also low but it had no leak according to the tire shop but evidently it leaked at the stem or bead enough to loose pressure. He cleaned out the dirt from the bead checked the tire and found nothing else wrong with it. I had previously aired it up to 35 PSI.

 

[94BULLITT]

One of my front tires debeaded. The pressure was about 25 psi and it was about zero out. I was trying to break up some ice on the driveway (it rained the night before a cold snap moved in). I was running in 2wd trying to spin my rear tires with ice spike tire chains with the HST response set to fast. I put my Kubota into 4wd and stepped on the hst pedal and because my front wheels were turned I watched the steel wheel spin but the tire didn't. It was pretty much immediate that the tire came off the bead. I just put the loader down and backed up to the house keeping most of the weight off the tire.

Because tractor wheels do not have the rolled bead like an automotive wheel has once it starts to slip or leak down it goes. I've never had an issue since them but I also have inner tubes for the front wheels so if it ever does I'll fix it and never have to worry again. My rear tires already have tubes. Tubes are cheap, ask the dealer to instill them and never worry again.

I believe it happened with 25 PSI in it. I noticed the sidewalls on the 4240 flex a lot. When I get a fairly heavy load on the front I make sharp turns slowly. If you mash on the hydro pedal you could roll a tire off. I have also notice if you are pointed downhill the and turn the sidewalls flex. Kubota specs 20 PSI for a tractor equipped with a loader. I run 30 PSI. I wear out these tires i'll get something with more plies.

 

[k0ua]

I believe it happened with 25 PSI in it. I noticed the sidewalls on the 4240 flex a lot. When I get a fairly heavy load on the front I make sharp turns slowly. If you mash on the hydro pedal you could roll a tire off. I have also notice if you are pointed downhill the and turn the sidewalls flex. Kubota specs 20 PSI for a tractor equipped with a loader. I run 30 PSI. I wear out these tires i'll get something with more plies.

FWIW, my Kioti's front tires are speced to run at 45psi. The rears at 20psi.. So that is what I do, and I check pressure frequently.

 

[94BULLITT]

FWIW, my Kioti's front tires are speced to run at 45psi. The rears at 20psi.. So that is what I do, and I check pressure frequently.

Is that what is on the sidewall or in the owners manual?

I think the Bobcat owners manual called for 40 in the fronts.