Results 1 to 8 of 8
  1. #1
    Gold Member KenB2920's Avatar
    Join Date
    Sep 2011
    Posts
    427
    Location
    Almont, Mi
    Tractor
    Kubota L3540HSTC

    Default R4 PSI

    When not using the loader (such as mowing or whatever you're using your tractor for), what do you keep your R4 tires at? I was mowing my yard which is clay. Now that its drying out its becoming harder. My thought was softening up the tires by lowering the PSI. When using the loader it's at 40 psi. Any recommendations?

  2. #2
    Veteran Member
    Join Date
    Dec 2009
    Posts
    1,304
    Location
    Kansas...USA
    Tractor
    Kubota B2620 (2012)

    Default Re: R4 PSI

    IIRC....the rears on my 2620 stay at 40 psi all the time. The front are at 35 with the FEL and 27 without.
    Kubota B2620 HST

  3. #3
    Veteran Member kebo's Avatar
    Join Date
    May 2006
    Posts
    2,311
    Location
    Lexington, SC
    Tractor
    2001 John Deere 790 4x4, bar tires

    Default Re: R4 PSI

    Quote Originally Posted by oldballs View Post
    IIRC....the rears on my 2620 stay at 40 psi all the time. The front are at 35 with the FEL and 27 without.
    On mine both fronts have a tendency to slow leak, so I keep them at 40psi too, just works better like that.
    Nothing could be finer than riding my JD790 in South Carolina!!

    2001 John Deere 790 4x4 with Model 70 FEL, 5ft International World Agritech bush hog, 5ft Wallberg BB, 5ft Frontier disc harrow, 5ft King Kutter II Rototiller, 5ft Cultipacker, 5ft Sitrex finish mower, Leinbach PHD with 9" & 12" augers, Leinbach middlebuster, Leinbach #11 Field Cultivator, boom pole, custom 3pt handi-hitch, clamp on bucket forks, Pat's Easy Change.

    Nothing runs like a Deere, or smells like a John....

  4. #4
    Elite Member s219's Avatar
    Join Date
    Dec 2011
    Posts
    2,753
    Location
    Virginia USA
    Tractor
    Kubota L3200

    Default Re: R4 PSI

    I keep them at max PSI all the time.

  5. #5
    Gold Member KenB2920's Avatar
    Join Date
    Sep 2011
    Posts
    427
    Location
    Almont, Mi
    Tractor
    Kubota L3540HSTC

    Default

    When I had my b2920 I also kept it at 35 psi. I just lowered my current tractors psi to 25 and took it for a test drive. World of a difference. I assume if I lower the tears I will feel like I am driving a Cadillac

  6. #6
    Super Member Gary Fowler's Avatar
    Join Date
    Jun 2008
    Posts
    7,850
    Location
    Bismarck Arkansas
    Tractor
    2009 Kubota RTV 900, 2009 Kubota B26 TLB & 2010 model LS P7010

    Default Re: R4 PSI

    I keep mine within 5 PSI of maximum at all times and dont adjust for implements. This is especially needed for the fronts as a low pressure can allow the tire to roll off the rim when turning if the pressure gets too low. I rolled a rear tire off my B26 while working on a slope and there was no evidence of low pressure (squatting of sidewall). It is really hard to tell if the pressure is low by just looking at the tires when there is no load or light load on the tractor, so if you decide to reduce the pressure, you should check the pressures frequently so you dont mess up a tire or rim if the tires roll off. This is especially important if you have liquid ballast in the tires.
    Now I check the pressures often to make sure they arent low from leaking down as they are not ballasted (factory requirement for back hoe )
    2010 LS P-7010C 20F/20R gear tractor & FEL, 2009 Kubota B 26 TLB, RTV 900 Kubota,17 foot Lund boat with 70HP motor, 2012-20 ft 12k GVW trailer, 2011- 52" Craftsman ZTR mower, 2013 Ferris Zero Turn, 3 weed whackers, pressure washer, leaf blowers, 7 foot bush hog, 8 foot landscape rake , 8 foot 3 PH disc, 2 row cultivator, 350 amp Miller AC/DC welding machine and all the tools needed to keep them all repaired and running.

  7. #7
    Platinum Member nspec's Avatar
    Join Date
    Dec 2007
    Posts
    606
    Location
    Southern Rhode Island
    Tractor
    Kubota B2630, '53 Farmall Super H, '47 Farmall AI, '44 Farmall A

    Default Re: R4 PSI

    Lower pressure = more ground contact = more traction, less slippage. That is the whole point of why radials are the cat's meow now.

  8. #8
    Super Star Member k0ua's Avatar
    Join Date
    Jun 2009
    Posts
    15,537
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: R4 PSI

    I keep mine at the recommended pressure in the manual.. 45 front 20 rear.
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.