tire pressure with filled tires

[bookmyer]

I have a question about the tires on my larger Kubota tractor. They are filled from the dealer and I have never added any air to them the whole time I have had the tractor since they look and feel fine. With the fluid in them would I inflate them to the same pressure rating that it says on the tire? I know I have to get the valve stems up to when I check so the fluid doesn't spew everywhere (probably why I've never messed with them before).

 

[oosik]

Book - I don't know what the inflation pressure says on your tire. However, this is what I do. My M6040 has Rimguard in the rears. At least once a year I will drive the tractor out onto the concrete hard beginning of my driveway - just to check inflation. What I'm looking for is that the bar treads on the rears touch down onto the driveway all the way across the tire. If I see the bars lifted a little on the very outside - that indicates over inflation. If they just touch all the way across - that's OK and I leave well enough alone. Sometimes if the beginning of my driveway has just the right moisture content - I will get the faint impression of the full bars left on the driveway - from all the way across the rear tires.

This "just right pressure" is in the neighborhood of 15 to 18 psi. BTW - if you are going to use a gage to check the pressure in your rear tires. Valve stem @ 12 'O clock(as you indicated) - then blow a couple two or three blasts of air from you compressor into the tire thru the valve stem(this will clear anything that may be in the stem) - then go ahead with your pressure gage.

Now, my front tires - I run them all the way up to max allowed pressure - 30 psi. I do a majority of my work with either the bucket or grapple on the FEL.

 

[Industrial Toys]

If you use calcium, be sure to use a special gauge. The calcium will wreck a normal pressure gauge.

 

[oosik]

IT is right on. My ignorance with calcium chloride filled tires - on my original tractor - ruined a couple pressure gauges. That's why I give the stems a couple blasts, if I'm going to be using my pressure gauge. Rimguard doesn't do a gauge any favors either.

 

[fried1765]

IT is right on. My ignorance with calcium chloride filled tires - on my original tractor - ruined a couple pressure gauges. That's why I give the stems a couple blasts, if I'm going to be using my pressure gauge. Rimguard doesn't do a gauge any favors either.

Calcium is relatively cheap, but is a bad choice for tires....Over time, your rims will be destroyed ...even with tubes.

 

[oosik]

Calcium chloride(CaCl) is a poor choice all the way around. I had my original tractor for 25 years and it had the rears filled with CaCl. The last five to eight years I was having to replace the valve stem cores annually. The electrolysis caused by the two differing metals in the valve core combined with the salt water was simply a FATAL situation.

Call your dealer - find out what he filled the tires with. If its CaCl - I would look to replace it with a more "tire friendly" solution. If Rimguard is too expensive - look to windshield washer solution or recreational vehicle anti-freeze. You should not have to worry much about freezing conditions - just enough to offset potential corrosive effects of the air/water solution.

 

[jfh28]

when I first got my tractor 10+ years ago I was getting puncture flats left and right so I got some "bulletproof" slime from gemplers and haven't had a flat since.......what I did notice is that once you fill the tires checking the air pressure will allow the slime to get into the valve and gum up the works......I wasn't able to blow it out either......so I couldn't check the pressure or add air so this weekend I went to tractor supply and got some new valve cores and replaced them on the tires........warning......when removing the old cores from the stems on filled tires make sure you place a rag over the stem and sit to the side....not in front of the tire.....please don't ask me how I know to do this.....lmao......for $2.99 and 10 minutes time all tires are operational again.......Jack

 

[oosik]

jfh28 - just as a side note - - you wouldn't happen to have any pics of that situation??? :dance1: :laughing:

 

[jfh28]

fortunately there were no witnesses.....well the dog saw it but he's not saying anything because I feed him.......had it been videoed I'm sure it would be a most viewed on youtube by now.......lol......was picking green goop out of my hair all night......one of those don't pee in the wind sort of learning experiences......lol.....Jack

 

[thatguy]

I ignored the tire pressure on my compact rear tires... and broke the bead off the tire and lost all the fluid.. My neighbors got the tire inflated for me and siad it had NO air pressure at all on the good side..

Cost me $100 for road call and to put methanol/water mix in the one tire..

Brian