Why are the front tires so tall on some 5 series?
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Thread: Why are the front tires so tall on some 5 series?

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    Jamone's Avatar
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    Why are the front tires so tall on some 5 series?

    Often I’ll see a 5 series as I drive past my local dealer and they have front tires that are 2/3 or more the height of the rear tires. But it seems like almost any other JD (until you get 7 series plus) the front tires seem < 1/2 the height of the rear. Even many of the 5 series from what I see on Deere’s site have the more typical front to rear ratio. Is there some reason that the 5 series can be such an outlier? Why wouldn’t they put taller front tires on the other models? Seems like it would be better for ride smoothness, ground compaction and traction.


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    Last edited by Jamone; 08-25-2018 at 10:20 PM.
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    Tall front tires, from my experience,,,



    have a negative impact on turning radius,,,
    but they
    have a positive impact on flotation.

    With tall front tires, I seldom have to use the 4WD feature of this tractor,,
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    Unsure if it is just the 5 series or not, I don't look at them often on line. But I do know the 5 series has literally dozens of different configurations for all sorts of specialty operations, I would guess because the 5 series is really a nice size tractor that is capable of many different applications.
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    The ones you are seeing with small front tires are likely 2WD models - vs. 4WD models.

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    Last edited by coaltrain; 08-26-2018 at 08:57 AM.
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    Quote Originally Posted by coaltrain View Post
    The ones you are seeing with small front tires are likely 2WD models - vs. 4WD models.

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    Nah, look at most 1, 2, 3, 4 series and their front tires are nearly the same ratio of front to rear as the 2wd 5 series and those are all 4wd.


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    I was expecting something like this to be posted
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    If you look at the layout of the front axle on the 4wd 5 series and the IH 534, the axle is straight across, like an automotive 4wd axle. There is no axle offset like you see on the smaller tractors.

    The axle has fewer moving parts, weak points that could be prone to failure when you start to get into higher horsepower and torque that you are starting to see in the 5 series.

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    Quote Originally Posted by coaltrain View Post
    The ones you are seeing with small front tires are likely 2WD models - vs. 4WD models.

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    Stan is exactly correct on this. I looked at 5e series at the dealer when looking at what tractor to buy, i had this exact question and they told me what Stan said.
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    I used to rent a carriage house on a horse property for about ten years. The landlord owned a 5 series among other toys and I used to love taking that thing through the woods when I was cutting up downed trees for firewood every year.
    After getting used to it I was kind of startled to see how many other tractors had such small front tires.
    We lived in a river valley with long eroded glacial topography and I still had to be darned careful with that tractor to not tip it over, just a couple scary moments...
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    I think people need to remember that the 5 series is also an AG tractor, not a compact utility.


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