JD 4320 Compact turf tires

[1937]

I am looking to put turf tires on my 4320 with cab and was wondering what the largest size is that I can go with on the rear. I have seen these with 44 x 18 x 20, but they look a little small. I currently have the r4 tires and I like how big the tires are.

Does anyone know what the factory turf sizes are supposed to be?
Does anyone know what the largest turf size I can put on?

 

[beenthere]

Knowing that you will need to buy the rims that fit the turf tires too.

Maybe start with your Deere dealer and see if you can order the wheels with the turf tires, then also the front wheels as well assuming you have front wheel assist.

Possibly that model cannot be fitted with turf, and maybe only R4 or Ag tires.

 

[oldtimer 66]

Here are the JD 4320 R3 turf tire sizes, front 27X10.5-15 4PR R3 T1 They have a 6 on 6 bolt circle. You can check your hub sizes. Rear 44X18.00-20 4PR R3 T1. The rears have a 8 on 8 bolt circle. I tried to get larger turf tires for my tractor but with no luck. I talked to a Titan rep at the time but he was not very helpful. He would not even give me tire diameters rolling distances etc. for the factory R3 tires. You would need those details to match the drive line front to rear. Anyways when I purchased my tractor new in 2006, I had the R4's installed but I also purchased a front set of new R3 front rims and tires only, $400 at the time, with the thought that later I would purchase new rear rims and rear tires. The new rear R3's were really pricey. Well that never happened but I did find a complete set of R3's on EBay for only $330. The gentleman had been trying to sell them for 2/3 months. He replaced his turf tires with R1's. He had I think a 2003, 4300 I think from what I remember. The front tires were shot so I gave them to my brother-in-law and he used then on a hay wagon. The rear tires shown in the attached pictures are the ones that I bought used and I will never wear them out in my life time. So they are around 15 years old now. I have been using them since about 2008 just for mowing in the summer time. They are humped up a little bit and the tractor likes to rock and roll at certain road speeds. I also included a picture of the tractor with the R4'sd like you have. One thing nice about the JD 4000 series and the R4's you can put chains on and not worry about fender clearance. That is not the case with the R1's. I would keep checking the internet for the R3's now that you know the tire sizes. I know I have seen new sets at one time or another and you are talking $2500 plus for a complete set. Maybe you can get lucky like I did. Later

 

[1937]

Thank you, Oldtimer for posting this information.

I found these on eBay two new 44/18x2 44 18 2 John deere tires on wheels | eBay

 

[gimmodog]

you should ONLY use the recommended size. you may think they look small but that is the size designed to fit that particular tractor, if you change the size you could damage your driveline if you use your 4WD with different size

 

[jthibodeau89]

Tucker tire can match your rim bolt circle if it is not the same as listed. I got my R1 set from them. I upsized to 12.4 rears with matching fronts on my 4300HST CUT. Very pleased with the price and service. They happened to deliver to my area (local) with free shipping via their in-house truck.