Rear Tire Pressures

Just had a 12 x 28 AG tire & new tube put on a new rim from this site. Previous rim rotted away from Calcium leak through the old tube. Elected to not put fluids in as I also just got a set of chains. Discovered the tire has a 2-3 cuts between the treads from running over something sharp I guess so my question is what would be a suitable pressure to keep the rears at to prolong the life of the tire? When I saw the cuts, I checked the pressure the tire place put in - is 28lbs. Tire says no more that 45. Its a 4 ply nylon.
Thanks in advance - John
 
Shouldve mentioned this tractor only does some lite chores around the estate-nothing harder than pushing what little snow we get around here. It had 12 - 15 lbs with the old rim & that seemed to be okay. I'll go out now and bleed it down a bit. Thanks Texas.
 
I also run 12# most of the time. If you have something heavy and drive on the road a lot, you might want to add just a little more. At 28# you were probably not putting a full lug on the ground which would wear the tread unevenly.
 
Are the cuts deep enough that the tube could get pinched inside?? If the answer is yes you need to break if back down and put boots over them or the tube will sooner then later get pinched and that will cause a leak
 
I can imagine. I dropped it down to 15 for now. Might drop it again to 12 when actually mounted on the tractor. The tire is resting against the side of the garage catching its breath from 20 lbs.
 
When I did roadside mowing, We ran about 20 lbs. to repel sharp rocks and broken glass at home for the gardens I put in anywhere from 10 to 12 lbs.
 
about 12 here too.. depends on rear type though.

pretty soon you will get used to looking at the profile and sidewall of the tire and be able to air them up no gauge needed.
 
Not sure if the cuts are deep enough to reach the tube but I have an idea they are more surface slits. Never noticed any cuts B4 with the rotted rim aired @ 12. The air valve was rusted bad when purchased and spread out to a good 10 inch oval shape over two years. Eventually started seriously leaking just from being parked. Other side is calcium filled also and shows signs of weeping while the valve area is in better shape than the one replaced. I expect to be replacing that rim also early spring if it lasts the winter snow push. Old - remember the clutch rod you sent me? The tractor has 5 minutes running time since then. Starter parts locked the clutch/ tire leaked out to flat / just now starting to see some light of starting her back up for the snow if needed. Never a dull moment !
 
If one tire is filled with fluid and the other is not either drain the filled one or fill the other or it can cause odd problems and even a flip over due to heavy on one side and not the other. I use Wiper fluid in my tires and Orchenlens has it on sale right now for $1.39 a gal
 
What kind of tire place puts in over 20 lbs in a tractor rear? 12-14-16, yes, for that size tire, and its load. I don"t run over 18 in a big tire, like 20.8-38, on 190 hp.
 
Good advice. Think I~d prefer to drain the other side. If its too lite to push I guess I'll have to fill them. How do you get the wiper fluid in them? and approx how many gallons would a 12x28 need?
Thanks Old
John
 
12X28 holds around 28gal give or take a little bit. I have a chart that I could look at to give you a better number but 28 is close since the 13.6X28 is 32 if I remember right. As for how do you fill them send me an e-mail and I'll send you a page fro ma JD owners manual that show 3 or 4 way to fill them
 
12 psi here too on matching tires
sometimes have to adjust one or the other on different brands
to level the tractor

especially if the tire was off the vehicle and dropped off,
always check pressure when you get it back from the shop.
seating the bead sometimes takes some ooomph.
At most shops, the low man on the totem pole 'gets'
to do the tire bull work....and sometimes they forget to let it back down......or don't care...
I've picked up tires where the pressure was so high, I
didn't know whether to let it down or run :D
 

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