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  1. #1
    New Member
    Join Date
    Mar 2011
    Posts
    24
    Tractor
    Satoh S-650 (T.S.No 305206)

    Default Tire size change??? Good, BAD or no big deal?

    Hello,

    I tried a search and cannot find answers to my question. Figured this was the spot to post. Thanks for the help.

    My project: I cleared my lot and will be "preping" (grading, leveling, raking, disc...basically working the land) for lawn seed/landscaping this upcoming fall...my tractor's rear tire size is 11.2 x 24. I have R3 (turf style tires --they look like diamonds or a diamond pattern). When I get them in the mud, they fill up with mud and become slicks. Pretty much ends my work day...I rock the tractor with fwd and reverse to get unstuck...what a huge pain...I end up shutting down and trying again later in the week when the ground dries up, but then it rains again!!!!!! While I sit there, upset I cannot help and think, "how do the construction guys do it? They can't sit and come back another day...time is wasting!!!" So I started looking at tires... after hours of research I now know a lot about tractor tires...I also know that they are EXPENSIVE. I will keep my R3s for the future when the project is finished, but for the current state of my muddy mess, I want to upgrade to R1 type tires (AG or Bar style tires) for better traction, but I don't want to invest $800+ for a set that will be replaced in two years (back to my old R3s) when the project is over


    I looked into adding chains to supplement the "bite" to my R3s...they too are EXPENSIVE and I didn't know if that would even work...so I looked at used stuff on craigs list and ebay... I found another possible solution, but not sure if it is "the" right solution...thus my quest for answers. The possible issue is that the tire size is a 9.5 x 24. The wheel (rim) size is the same and I know that the smaller tire is 2" thinner and not as tall as my 11.2s, but the tires are super aggresive and the price is SUPER right...will these work? Can one downgrade in tire size? Will this cause "other" issues that I am unaware of? I cannot get a solid yes or no answer...

    They will fit my tractor as I have taken measurements (I have seen these in person and touched this set; they are practically brand new for $300 for both tires and wheels...even has wheel weights) Before I go and hand over money I wanted to double check with you all.... any thoughts????

    Option One: Spend the money and get the right size 11.2 x 24 R1 tires (least favorite option as it is the most expensive)

    Option Two: Get chains for your current R3 setup (cost is roughly $350-$450 for the set)

    Option Three: Go with the smaller/skinnier 9.5 x 24 tires and rock them out... sell them once project is finished. (Most favorite and hoping this is it )


    Thanks again,

    Raf

  2. #2
    Silver Member
    Join Date
    Jul 2009
    Posts
    197
    Location
    La.
    Tractor
    Kubota L 3400DT

    Default Re: Tire size change??? Good, BAD or no big deal?

    Hello
    If the tractor isn't 4x4 you wont have any problems.

  3. #3
    New Member
    Join Date
    Mar 2011
    Posts
    24
    Tractor
    Satoh S-650 (T.S.No 305206)

    Default Re: Tire size change??? Good, BAD or no big deal?

    Quote Originally Posted by Just Bill View Post
    Hello
    If the tractor isn't 4x4 you wont have any problems.
    Hi Just Bill...Thanks for your reply.

    No, my ol girl is a 2wd. Sometimes I wished she was 4x4 because of my getting stuck situation, but I really think that upgrading to the more aggressive tire I will be OK and see a real performance difference.

    Agree?

    Thanks again.

    Raf

    By the way.... why would it be a problem with 4wd? More for my own knowledge. Thanks.

  4. #4
    Silver Member
    Join Date
    Jul 2009
    Posts
    197
    Location
    La.
    Tractor
    Kubota L 3400DT

    Default Re: Tire size change??? Good, BAD or no big deal?

    You have to keep the right rear to front tire size ratio because of the
    gearing.

  5. #5
    Super Member bp fick's Avatar
    Join Date
    Aug 2009
    Posts
    5,630
    Location
    Beaver Creek, Northern Michigan
    Tractor
    Kubota BX2360

    Default Re: Tire size change??? Good, BAD or no big deal?

    Quote Originally Posted by Just Bill View Post
    You have to keep the right rear to front tire size ratio because of the
    gearing.
    Just said it was 2 wheel drive. No ratios to worry about.
    BP


    "Some chickens, some gardens and a Kubota."

  6. #6
    Super Star Member
    Join Date
    Feb 2008
    Posts
    11,796
    Location
    somewhere usa
    Tractor
    Deere 110tlb, 4520, x749, L130

    Default Re: Tire size change??? Good, BAD or no big deal?

    bp fick,
    Did you miss the OP asked why 4x4 would make a difference just for knowledge?


    Green acres,
    How muddy is the area you are working on? Sometimes contractors do have to wait for better weather. Be aware that R1 tires can spin too, when they do you bury the wheels quickly.

  7. #7
    Platinum Member civesnedfield's Avatar
    Join Date
    Jun 2007
    Posts
    600
    Location
    Central Maine
    Tractor
    2007 Mahindra 4530----1972 Massey Ferguson 1100

    Default Re: Tire size change??? Good, BAD or no big deal?

    Quote Originally Posted by Green Acres rAf View Post
    Hi Just Bill...Thanks for your reply.

    No, my ol girl is a 2wd. Sometimes I wished she was 4x4 because of my getting stuck situation, but I really think that upgrading to the more aggressive tire I will be OK and see a real performance difference.

    Agree?

    Thanks again.

    Raf

    By the way.... why would it be a problem with 4wd? More for my own knowledge. Thanks.

    There is a thing called drag ratio. It is basically how much the front whees are lagging behind or ahead of the rearwheels. When changing tire sizes on 4wd tractors this is very important. If the drag is not right you can cause alot of damage.

  8. #8
    Super Member
    Join Date
    Dec 2007
    Posts
    8,555
    Location
    Central Ohio
    Tractor
    JD 5520, 790- Kub L4300, B7800, MX5100, M6800, M7040

    Default Re: Tire size change??? Good, BAD or no big deal?

    I have changed many times over the years in both 2WD and 4WD and had 100% excellent resuts.
    Kubota, for example used to offer a dizzying array of tire size choices so I figured "me too".

    As noted and to anyone ever reading this, if you change 4WD fronts and rears, they must be matched or you will ruin the front axle gearbox.
    Manufacturers give the "axle ratio" but tire shops have books of data.
    Double check on your own with the formuala in my earlier post or look up Firestone Company Tire Data on doing the math.
    I have written about this before so do a search. Basically, in 4WD the front end pulls the rear by a few percent.
    My 2WD and 4WD tire changes all worked great and it's the only way to get what you want.
    ****

    May I be the kind of person my dogs think I am,

  9. #9
    Platinum Member
    Join Date
    Dec 2010
    Posts
    505

    Default Re: Tire size change??? Good, BAD or no big deal?

    Quote Originally Posted by civesnedfield View Post
    There is a thing called drag ratio. It is basically how much the front whees are lagging behind or ahead of the rearwheels. When changing tire sizes on 4wd tractors this is very important. If the drag is not right you can cause alot of damage.
    We call it overrun. The front tires should turn a little faster than the rears (positive overrun). No more than 5%. I've found 1-2% best for smooth engage/disengage and proper tire wear.

  10. #10
    Elite Member kebo's Avatar
    Join Date
    May 2006
    Posts
    2,765
    Location
    Lexington, SC
    Tractor
    2001 John Deere 790 4x4, bar tires

    Default Re: Tire size change??? Good, BAD or no big deal?

    Just a thought but would rear chains help the OP???? That's cheaper than buying a new set of ag tires.
    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, 5 1/2ft Cultipacker, 5ft Sitrex finish mower, Leinbach PHD with 9" & 12" augers, Leinbach middlebuster, Leinbach #11 Field Cultivator, custom 3pt handi-hitch, clamp on bucket forks, Pat's Easy Change.

    It's not how slow you mow... it's how well you mow slow!!

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