Proper inflation?

[Fastball]

My dad's tractor is a 4x4 L2900 with R-4 tires sized 13.5 x 16.1 on the rears.
I'm not sure if the tires are loaded - but when I was messing with the valve, liquid did come squirting out.
Anyways, I had a tire guy come over in the fall when one of the fronts came off the wheel and he pumped up the tires. But I want to make sure of the pressure. He had almost 28 psi in the rears. I see guys here taking about 14-20 psi in their rears. I knocked it down to just over 20.
What should they be at?

 

[ovrszd]

Sorry I'm not familiar with your tractor. I don't understand what you said in regards to tire size??

Typically on a CUT rears I would run 12-18 depending on size. Fronts I would run 16-24 again depending on size and whether it has an FEL.

 

[Oldpath05]

On my L3400 11.2-14 AGs, just had them reloaded with 15-18 psi, the place that did them put in 20, was just a tad to hard. ("but when I was messing with the valve, liquid did come squirting out.")<<<<<If the liquid was clear-ish could be calcium, I'd change valve core's if the stuff has been in there a while.

 

[Texasmark]

I run all mine as soft as I can considering the machine and circumstances. For example the 33,12.5x16.5 tires on the rear of my 24 hp 1800# 2400 are rated 2600+# each at 30 psi max rating. That's 5400# of buoyance on an 1800# machine. Guess what that does to your butt and back? For me it's my comfort. The tires will just have to bear the brunt. I run those at 6-8. My other tractors are running 28" rims with ag tires (R1s) and I run them at 18 max. I think they are rated for 18 max.....check the sidewall of the tire. Lots of them tell you the max to support a given rated load which is there for your viewing also.

 

[Fastball]

I run all mine as soft as I can considering the machine and circumstances. For example the 33,12.5x16.5 tires on the rear of my 24 hp 1800# 2400 are rated 2600+# each at 30 psi max rating. That's 5400# of buoyance on an 1800# machine. Guess what that does to your butt and back? For me it's my comfort. The tires will just have to bear the brunt. I run those at 6-8. My other tractors are running 28" rims with ag tires (R1s) and I run them at 18 max. I think they are rated for 18 max.....check the sidewall of the tire. Lots of them tell you the max to support a given rated load which is there for your viewing also.

Checked the sidewall...all it gave was a max of 30-odd psi. I drove it around today at 20+ psi and it's still a tad bouncy. I'll knock it down to 15 or so and see what it feels like.

 

[Wagtail]

This website may assist: Tire Pressure Calculator - Titan International

 

[Fastball]

This website may assist: Tire Pressure Calculator - Titan International

Not sure how to enter in the metric equivalent of 13.5 x 16.1 - which Are the only numbers on the sidewall.

 

[JimRB]

Google inch to mm or something like that. Inches to Millimeters conversion | inches to mm

 

[s219]

If you are moving heavy loads, you'll be at the higher end of the scale. Since that's about all I do with my tractor, both with FEL and 3-pt, I run at max. You can back off for other tasks.

 

[Fastball]

Yeah, I'm at the max on the fronts, what with the FEL, etc.
As for the rears...I found this - http://www.titanstore.com/info/499505.
$777 dollars? Really? Holy cow...why the massive price?