Good morning,
I tried to search but I couldn't find my answer. I own a GC1723 MF subcompact tractors, and have been getting conflicting information on the benefits of tire ballasts for it.
Multiple MF dealers have told me that it's not worth the trade off. One dealer mentioned the wheels can have a tendency to spin in the tire, another said it doesn't make much difference and using proper ballasts on the front and rear attachments is the way to go. I also have been in situations where there isn't enough power from the tractor to push me up an incline, and I would assume that a weighted tire/wheel is going to create more resistance.
When shopping for equipment, the Kubota dealer offered to fill the tires for free without me even mentioning it, which makes me assume that this is very common and must serve a purpose on the subcompact lines. I see many other subcompact owners load their tires as well.
Is loading our tires on the subcompact line actually worth the time and energy?
I loaded the OEM R4 stiff sidewall tires on my 2400 initially. The tires are rated for about 2500# each at their rated pressure....18 psi as I recall. 2 tires =5000# and the whole tractor only weighs 1800 + loader.......add that to stiff sidewalls and stiffer than necessary coil springs under the seat and the load on your back is BRUTAL on dry, heavy clay soils.
I filled mine to about 70% tire height and dropped the pressure to less than 10 lbs in an attempt to get a soft ride with the OEM tires. Had 2 problems, one being tires spinning on the nice new, shiny, slick wheel and the other was that the weight of the fluid in the tire tended to put unequal pressure around the circumference of the rim meaning you had weight + air pressure at the lower part and just air pressure at other parts.
Tires would separate from the wheel under working conditions. After spending hundreds of bucks on tire and wheel combinations and seats, I spent another couple hundred or so on wheel weights, actually 2 sets (4 weights, running about 135# per wheel.....equivalent to about 19 gallons of water which no way would the tire accommodate that volume.
The rest of the story is I bought a suspension seat $100+, actually 2 as the first one was like MF seats back in the '60's and was essentially a padded cup...too narrow for my hip bones (suspension part worked great), and the second was flat, more conventional and worked, for another $100+. Then I thought turf tires at 4 ply would give me a soft ride, but the only size available had stiff sidewalls...finding out after the purchase...another $375 down the drain but wait, had to downsize the wheels as the OEM were 16.5" which is a heavy duty tire size...like 12 ply Skid Steer tires and to get a turf and later a set of Farm lug (R1) tires had to go to 16" wheels, another $300ish down the drain.
Finally, the 8x16 4 ply R1s, (soft sidewalls finally) at 10 psi with the weights mentioned above and with the suspension seat, gave me a reasonable ride. But with out an implement attached, it took another 230# in the seat (me), to keep the rear tires on the ground with a full bucket.
On the weights as an offset for heavy FEL work, my 2400 has more HP and lift capacity than the frame can tolerate.....in short, you need something on the rear to hold the rear tires on the ground if you fill up the bucket with dense material, like rocks, or wet sand. So add weights, and yourself, or have an implement on the 3 pt when doing heavy work.