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  1. #1
    Silver Member Engine66's Avatar
    Join Date
    Dec 2004
    Posts
    172
    Location
    Orange County, CA & Vermont
    Tractor
    JD 2305 & 4720/400cx/BH448

    Default Difference of the 2 types of R4s for 3xseries?

    I see on the JD website that there are 2 different types of R4s offered. One set is under $200 and the other is almost $400...both are different sizes. The brochure shows the "half-moon" style tread and I imagine the other is the same as on the other JD series tractors? Anyone know the difference? How's the performance of the "half-moon" style tread and what's the ground clearance on the 3xseries? Thanks for the info.

  2. #2
    Veteran Member
    Join Date
    Sep 2003
    Posts
    1,228
    Location
    Hartselle, Alabama
    Tractor
    Deere 2520

    Default Re: Difference of the 2 types of R4s for 3xseries?

    I think the smaller rears are 6 ply. The larger rears are 4 ply. I went with the larger size and so far am happy. JC
    JD 3320 LX5, KK rake and off brand box and rear blade. Millonzi grapple. Deere X495 for grass cutting.
    01 Ram 4x4 2500 CTD and 22' 12k trailer. Want a tiller and dump trailer.

  3. #3
    Silver Member putt_putt_green's Avatar
    Join Date
    Mar 2007
    Posts
    199
    Location
    South Central MI
    Tractor
    JD 3520

    Default Re: Difference of the 2 types of R4s for 3xseries?

    I went with the smaller R4s and purchased in May 2007. I don't know if the tread has changed since then, but I have no traction problems.

    Reasons:
    1) 6 ply versus 4 ply
    2) According to the John Deere Manual, you can put chains on the smaller R4s, but not on the larger R4s.
    3) $150 cheaper.

    The smaller ones are 2 inches shorter, giving 1 inch less of ground clearance. This also lower the center of gravity by roughly an 1 inch. The larger R4s look more beastly.

    Here is a picture of our tractor so you can see the R4s.
    MrGreenManTBN.jpg - Image - Photobucket - Video and Image Hosting
    Putt Putt Green
    JD3520 : canopy, loader with toothbar, hoe, boxblade, 2-14 plow, tiller, and pallet forks.

  4. #4
    Silver Member Engine66's Avatar
    Join Date
    Dec 2004
    Posts
    172
    Location
    Orange County, CA & Vermont
    Tractor
    JD 2305 & 4720/400cx/BH448

    Default Re: Difference of the 2 types of R4s for 3xseries?

    Putt Putt,

    That's a nice looking set-up! I noticed the toothbar, HD bucket, brush guard, light guards, etc...looks like you do some brush work. Can you tell me what your ground clearence is and if the R1s are the same size as your R4s or the other sized R4s? How's traction been with your R4s? Also, you chose the 300cx loader...happy with it over the 300x? Take care...thanks.

  5. #5
    Platinum Member Killer_B's Avatar
    Join Date
    Sep 2004
    Posts
    578
    Location
    Kalamazoo Michigan
    Tractor
    John Deere 3320

    Default Re: Difference of the 2 types of R4s for 3xseries?

    Engine 66,

    Don't forget, turf tires are babe magnets.

  6. #6
    Silver Member putt_putt_green's Avatar
    Join Date
    Mar 2007
    Posts
    199
    Location
    South Central MI
    Tractor
    JD 3520

    Default Re: Difference of the 2 types of R4s for 3xseries?

    That's a nice looking set-up! I noticed the toothbar, HD bucket, brush guard, light guards, etc...looks like you do some brush work. Can you tell me what your ground clearence is and if the R1s are the same size as your R4s or the other sized R4s? How's traction been with your R4s? Also, you chose the 300cx loader...happy with it over the 300x?
    Engine66,

    Thanks for the complementing my tractor. I haven't done very much brush work, other than get rid of some evasive bush thats growing in my weeds. I think the upgraded front grill just looks really good. The tractor has not been in the woods yet.

    I haven't had any traction problems with my loaded R4 tires. I pulled a 2 bottom plow through blue clay with no problems on dry ground. I'm definitely happy with my tire selection. I switched to the smaller R4s at the last moment when ordering the tractor. I believe the R1s are close to the same size as my smaller R4s, but not sure.

    I would definitely go with the 300cx over the 300 and get the HD bucket. This gives you the option to add a tooth bar later.

    The lights are nice for night driving. Higher would be better though.

    I'll try to get you some information out of the manual and post a reply tomorrow, if I remember.
    Putt Putt Green
    JD3520 : canopy, loader with toothbar, hoe, boxblade, 2-14 plow, tiller, and pallet forks.

  7. #7
    Silver Member putt_putt_green's Avatar
    Join Date
    Mar 2007
    Posts
    199
    Location
    South Central MI
    Tractor
    JD 3520

    Default Re: Difference of the 2 types of R4s for 3xseries?

    These are the rated speeds according to my owners manual.

    Small R4 17.3 mph
    Large R4 18.2 mph
    R1 19 mph

    One should get more speed with larger around tires. So it looks like the R1 give about 1 inch more of ground clearance over the larger R4s and 2 inches of ground clearance over the smaller R4s.
    Putt Putt Green
    JD3520 : canopy, loader with toothbar, hoe, boxblade, 2-14 plow, tiller, and pallet forks.

  8. #8
    Silver Member Engine66's Avatar
    Join Date
    Dec 2004
    Posts
    172
    Location
    Orange County, CA & Vermont
    Tractor
    JD 2305 & 4720/400cx/BH448

    Default Re: Difference of the 2 types of R4s for 3xseries?

    Putt, Putt...thanks for the info...and agaijn, very nice set-up!

  9. #9
    Platinum Member Chris2520's Avatar
    Join Date
    Mar 2007
    Posts
    779
    Location
    Marietta GA.

    Default Re: Difference of the 2 types of R4s for 3xseries?

    I think the large R4's look better. but the small ones may be more
    stable , as it would be lower to the ground. only thing is.
    I saw a 3320 with small R4's and a 448 hoe. and from the back
    it dont look like there is enough ground clearance if you go
    in the woods.

    Chris.....
    John Deere 2520 , R4's , 200CX loader with 61 inch bucket and JD Tooth Bar. And Markham 7 tooth. Tooth bar. 46 Backhoe with 16 inch bucket. with Custom made Street Flip pads off a 448 hoe. Foward work lights. Dual rear work lights. Heavy duty Alternator. I-Match , Ballast Box , Frontier BB2060 box blade , Frontier pallet Forks , JD 3 point reciever hitch. and soon A lot more.. and for grass cutting , John Deere GX 255 with 48 inch deck.

  10. #10
    Silver Member putt_putt_green's Avatar
    Join Date
    Mar 2007
    Posts
    199
    Location
    South Central MI
    Tractor
    JD 3520

    Default Re: Difference of the 2 types of R4s for 3xseries?

    Chris, I didn't think of that when I bought my tractor. Maybe its a good thing I didn't get the 448 hoe then. The clearance for the 447 hoe is not real great either. My mobile base for the hoe is around 5 inches tall and probably clears under the hoe about 2-3 inches, so that would be about 7 inches of clearance. Whats the clearance on the 2520 hoe?
    Putt Putt Green
    JD3520 : canopy, loader with toothbar, hoe, boxblade, 2-14 plow, tiller, and pallet forks.

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