Bigger tires on a 1 series
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    mike01's Avatar
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    Bigger tires on a 1 series

    Has anyone ever tried putting slightly bigger tires on a 1 series? After doing a bunch of loader work, I feel like the low range is a little too low, and the high range isn't high enough. I'm thinking going up a few inches in tire size would fix that. There is room under the fender for 29" tire (so 20" up front, or thereabouts). There's no reason to think the transmission couldn't handle it.

    I tried looking online but found nothing. Any thoughts?
    2019 X758, 54" Autoconnect deck
    2018 2032R, 220R Loader, dual rear SCV, hydraulic top link, SB1164 Snow Blower, RC2072 rotary cutter, BB5048L box blade, 42" Titan forks, BB2060L back blade

    Owned in the past:
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    If you could find both front and rear tires that maintained the same ratio of size from front to rear, then sure, that could work. Replacing just the rears, or a mismatched set will mean that you won't be able to use four wheel drive. It is critical for fwd that you maintain the correct ratio or else you'll put huge stresses on the gearbox when in 4x4.

    In changing the size of the tires you will also end up raising the rear more than the front if you keep the ratio the same, which is necessary. You may raise the rear 4" but the front only 2". You can't raise the front and rear the same amount while maintaining the correct tire size ratio. You also may find clearance problems between the rear tire and the backhoe support frame, (if you have the backhoe of course) and there would be an issue with the front tires rubbing when turning sharply. Plus there is the reduced stability due to raising the the CG, and reduced stability due to having increased flexible sidewall height.

    Probably a bad idea, but if you understand how what you are doing affects everything, you could make it work, but I wouldn't bother.
    Last edited by W9GFO; 04-01-2017 at 09:05 PM.
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    mike01's Avatar
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    I know about the ratio, which is why I mentioned 20" front tires, which are the size I see used in conjunction with 29" rears. No guarantee that will work with the 1025r, which is why I asked if anyone has done it.

    I don't think I would bother either, it's fine the way it is, but I do find it surprising that no one has done this (or so it appears).
    OxPath and TJR345 like this.
    2019 X758, 54" Autoconnect deck
    2018 2032R, 220R Loader, dual rear SCV, hydraulic top link, SB1164 Snow Blower, RC2072 rotary cutter, BB5048L box blade, 42" Titan forks, BB2060L back blade

    Owned in the past:
    X570, X758 (2015), 1025R, X590

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    HydroHarold's Avatar
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    Remembering when I was researching SCUT's this was one of the complaints of some owners back then... Until today it all seemed to be resolved as folks worked around the gearing one way or another. I also doubt that JD will solve this one on future 1 size series issues as they probably will push this engine/chassis/transmission combo a lot further down the SCUT road. This machine was pitched to "larger property owner/maintainers" who were probably not going to do an s-load of loader work. For my half acre "I got plenty of gear?"
    2013(12) 1026r TLB 54 QH front blade, 54D Auto Connect deck, ballast box, carryall

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    Quote Originally Posted by mike01 View Post
    Has anyone ever tried putting slightly bigger tires on a 1 series? After doing a bunch of loader work, I feel like the low range is a little too low, and the high range isn't high enough. I'm thinking going up a few inches in tire size would fix that. There is room under the fender for 29" tire (so 20" up front, or thereabouts). There's no reason to think the transmission couldn't handle it.

    I tried looking online but found nothing. Any thoughts?
    Isn't this basically what JD did to create the 2320? It's like a stretched version of a 1 series with a slightly longer wheel base with stronger hydraulics and bigger tires. Maybe the tires on that tractor will fit although tractordata.com lists the rears as 31's so maybe not. If you read some of the threads on the 2320 some folks are not happy with the power output on that tractor either, but I think it's the hydraulic pump/valving they have been having issues with not tire size.
    ColonyPark, ejb69, OxPath and 1 others like this.

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    ejb69's Avatar
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    I don't think its feasible to put larger tires on a 1 series. There just isn't enough clearance . Tire chains hardly clear the fenders / fuel tank. Deere made the 1 series as compact as they could, so they went with smallish tires. The 2320 / 2025 is basically a 1 series with a larger frame and tires.
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    Eric

    2011 1026R / H120 / 60D auto-connect, independent-lift mmm / 54" snowblower / 4' KK Pro rotary mower / KK 4' tiller

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    Bulitt's Avatar
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    I have turf tires all around on my 2305. Maybe it's just me, but in all the pics I look at the "R" tires seem noticeably larger?
    Bob - 2011 2520

    2520 Mods - http://www.greentractortalk.com/foru...2520-mods.html
    Posted for general info only. Not suggesting you alter your tractor based upon my feeble minded posts. Do so at your own risk. Maintenance and mods should be performed by a JD Dealer, or refer to your owners and maintenance manuals for proper procedures.


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    To the op.. I hope someone figures out a way to do it too.. My reason is more about driving comfort than anything else. In addition to 2 acres of yard to mow, I also maintain a section of ATV trails near me that's about a 4km round trip. The puny ass front tires on the 1 series (and all other tractors in this class from all OEM's) can barely roll over a walnut without hopping off the ground. Just a bit larger diameter up front would make a huge difference. The math and engineering required to figure out what will work and what won't (if anything) is beyond me so I'm no help haha!. But if someone did figure out a size upgrade that would work. I'd give it a shot. The 1 series is so great and really is a do it all power house. Just wish it had bigger feet!
    Radsbee and mike01 like this.
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    Keeper of the GTT Cookies dieselshadow's Avatar
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    I put bigger tires on my 1026R by trading up to a 2720. All the comments about how bigger tires ride are absolutely correct. I don't see how you can put larger tires on a one series without some serious consequences in performance, clearance, abilities, and driveline life.
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    I think the real numbers need to be looked at here. The difference between 26" and 29" tires is less that 1' in circumference. In a 100' run, the 26" tire will rotate 14.7 times, the 29" tire will rotate 13.3 times.

    So, if the 26" tire rotates 14.7 times, this will be enough to carry you 100', if 29" tire rotates 14.7 times, this will carry the tractor 110'. This difference isn't going to be enough to even notice from the seat and surely isn't worth the money, time and effort to make this change.

    IMHO, if low range isn't fast enough, use high range and back off the forward propel pedal some.

    Another thought, when doing FEL work with the bucket full, low range is fast enough unless you are on really smooth surface and on the level.
    JD 1025 TLB (2013) ** 60D 7 Iron MMM w/auto-connect ** H120 FEL** 260 BH ** 54" snowblower ** 54" blade ** 52" Front Broom ** Ken's Bolt on Hooks ** Frontier BB2048L box scraper ** County Line 5' landscape rake ** JD Hydraulic Dump MCS ** Artillian Forks w/36" Forks ** JD 3 - Point Ballast Box ** JD I-Match Quick Hitch ** Heavy Hitch front Weight Bar ** Heavy Hitch 3 Point Weight Bar ** Fimco 40 Gallon Sprayer ** EA Aerator ** FitRite Hydraulics Rear SCV ** 12 - 40# suitcase weights

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