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?