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  1. #1
    Veteran Member NewToy's Avatar
    Join Date
    Jun 2005
    Posts
    1,024
    Location
    Ohio
    Tractor
    '05 Farmtrac 270DTC

    Default Tire Pressures

    I recently purchased a new Farmtrac 270DTC equipped with the R4 style tires. The rears are 12.5/80x18 and the tire has "48psi max" marked on the sidewall. The fronts are 8.5x12 and they are 50 psi max. I was wondering what is the lowest pressure that you can safely run in these tires? I just use it to mow with a RFM and am looking for a smoother more compliant ride. They currently have 38 psi all around and they are rock hard, every little bump on the road is felt.
    Thanks for your help,

    John

  2. #2
    Elite Member
    Join Date
    Mar 2002
    Posts
    3,824

    Default Re: Tire Pressures

    About 1/2 max, or 24-25psi should be about right.

  3. #3
    Gold Member
    Join Date
    May 2004
    Posts
    457
    Location
    SW of Minneapolis, MN
    Tractor
    2003 Kubota L3430 HSTC

    Default Re: Tire Pressures

    The operator's manual should contain the manufacturer's recommended tire pressures along with other important safety information. I would recommend reading it thoroughly to familiarize yourself with the tire pressure information and other information related to your new tractor purchase.

    That said... 38 psi does seem awfully high for a rear ag tire. However, my experience is mostly with larger farm ag tires. An old rule of thumb was... with one of the tire lugs/bar centered on the ground, the outside edge of the lug should be a pencil height off the ground (approximately a 1/4").

    OrangeGuy

  4. #4
    Veteran Member NewToy's Avatar
    Join Date
    Jun 2005
    Posts
    1,024
    Location
    Ohio
    Tractor
    '05 Farmtrac 270DTC

    Default Re: Tire Pressures

    Thanks for the info fella's. I'll try that. You would not believe how anemic the owners manual is for these Farmtrac's. The only mention of tire pressure refers you to tire mfg's reccomendations and the only info on the tire is the max pressure rating. It only took about 15 minutes to read the manual front to back so I have that covered. [img]/forums/images/graemlins/confused.gif[/img]

    Thanks again,

    John

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