3320 Height / Width

[nmu98]

That might be the case...BUT when the blower is on the ground and in operation, I'm down to just 220lbs additional weight, I wouldnt think that 220 lbs would make them go from skates to real tires.....
Like I said, this is my first machine with R4's....Deere made the decision easy for me...Turfs are not for me, and the R1's look super chinsy on a machine of this caliber. For my intended use, I was steering towards R4's anyways...

I agree with what you said, but I am not typing very clear. I think that adding any weight to these tires helps them alot. It forces them to flex more and get more to the ground. The larger R4's are very flat tires and the bars are very thick. With my snow push and a ballast box my large R4's do as well as the turf tires on our 4110. On concrete, if you spin, they turn the snow to ice and you are screwed. They do not dig because they are so flat. If I drop the snow push, I get more wieght in the back and I can get them to do better. The weight helps.

I agree, the R1's on the 3x20, and even the 4x20's dont look cool, but they do get more traction to the ground. On both my 3720 I put R4's, so I do not disagree with you that I would get R4's on this tractor again.

The larger R4's are for better traction, ask a dealer or JD.

Rob

I never said that they did not nor did I even compare the smaller ones tot he larger R4's. I had/have the large R4's on both 3720 that I had/have.

 

[nmu98]

I agree with what you said, but I am not typing very clear. I think that adding any weight to these tires helps them alot. It forces them to flex more and get more to the ground. The larger R4's are very flat tires and the bars are very thick. With my snow push and a ballast box my large R4's do as well as the turf tires on our 4110. On concrete, if you spin, they turn the snow to ice and you are screwed. They do not dig because they are so flat. If I drop the snow push, I get more wieght in the back and I can get them to do better. The weight helps.

I agree, the R1's on the 3x20, and even the 4x20's dont look cool, but they do get more traction to the ground. On both my 3720 I put R4's, so I do not disagree with you that I would get R4's on this tractor again.

I guess what I am saying in to many words is; If you don't put weight on them they can suck. People having issues with them in snow might not be weighted correctly for the implement they are using. I know I am not with the 3720.

 

[foggy1111]

At one time I figured I could not live without R1 tires....as I thought I needed all the traction I could get for pulling a disc and a plow. Turns out I don't use my plow due to sandy soils (don't want to turn sand up). Now I mostly use my tiller....so the hard "ground-engaging" work is reduced. Then too....my soils are mostly a sandy-loam.....so I'm generally not working in a greasy environment with 'em. (My ground is dry a few hours after a hard rain.) Snow use is not needed here.

Also my disc is smaller sized (5.5' box frame) and with the extra weight of the 20 series I figure these R4's should out perform my 790 with R1's.....which is all I need. The extra toughness of the R4's (over R1's) on my wooded property should be a good thing.

Sooo....I'm hoping these new tires are the deal for me.

 

[Spudland_Dave]

I agree, the R1's on the 3x20, and even the 4x20's dont look cool, but they do get more traction to the ground. On both my 3720 I put R4's, so I do not disagree with you that I would get R4's on this tractor again.

Hate to sound "vain" but it wouldnt have killed Deere to put larger/meaty R1's on the option list...I know its purely a cosmetic thing, but stilll...
When you see a Kubota with R1's it looks like a real tractor, They actually got nice rubber...a 3x Deere with R1's looks odd....

 

[msmud]

R4 or R1, not overinflating the tires makes a huge difference in traction. My parents' 3320 Cab model will easily spin the wheels with rear R1 pressures of 13 psi, but not with 10.5 psi. Same with the 3038E I just bought with R4s. I had worried about traction because of all the power in such a light package with the 3038E, but at 10.5 psi in the rear tires, grip is very good. Neither tractor has iron wheel weights or liquid fill.

 

[Rob-D]

I guess what I am saying in to many words is; If you don't put weight on them they can suck. People having issues with them in snow might not be weighted correctly for the implement they are using. I know I am not with the 3720.

That's a weight distribution problem not a tire problem. All tractors should have proper ballast regardless of the tires.

Rob

 

[beppington]

When you see a Kubota with R1's it looks like a real tractor ...

My R4's make mine look like a "real tractor" to me:

 

[msmud]

The procedure put forth by Goodyear in their AG handbook is basically to weigh the tractor at each axle; ballast your tractor front or rear such that a MFWD tractor has 35 - 45% of weight over the front wheel with all attachments added; then lower the tire pressures to the minimum necessary to support each axle per their inflation and ground speed tables. They don't recommend liquid fill, and seem to suggest that even iron weights may be avoided in many cases with this procedure, unless needed to bring the axle percentage into balance.
This is what I have tried to do with our tractors, and so far it works, though I have yet to try them with heavy ground engagement attachments like a plough.

 

[rjkobbeman]

My R4's make mine look like a "real tractor" to me:

I agree! I love my R4s.

I do wish Kubota had options in the R4 choice. I had 4 different tire/wheel size options and like 8 or 9 choices if you include bias/radial/steel/cast varieties.

When you choose R4, you get one option. One size, steel wheel. My "big bad M8540" actually looks fairly small when you put the shorty R4s on it! The short R4s combined with a folded down ROPS and a "down exhaust", my tractor looks like a low rider!

 

[nmu98]

That's a weight distribution problem not a tire problem. All tractors should have proper ballast regardless of the tires.

Rob

For the tire work right, it has to be weighted correctly. I don't want to use the word most, but many people do not ballast thier machine correctly and it leads to compaints about tires and traction. That was my only point.

These tractors should, but do they?