Here's my :2cents:. I believe that it is good that you did not fill your tires. For ANYONE that is not all that familiar with tractors, this is a good thing in my opinion.
Reason being is NOW you will be able to really appreciate the difference it makes when you do fill your tires. It will change your tractor into what seems like a different machine.
You mentioned that you have a 4000lb machine and you have not had any problems so far and you may not.
My first new tractor weighed in at about 9700lbs. While very capable, it just could not get it's power to the ground. I first added wheel weights after about a years use, basically worthless, simply not enough weight. I then filled the tires, all 4 of them. OH MAN, this became a different machine, by far more stable, rode far smoother and actually had traction. I found another set of wheel weights and added them. By adding over 2500lbs of ballast I finally was able to get the FULL capabilities out of my tractor. :thumbsup: :thumbsup:
My second new tractor was a smaller tractor that weighed about like yours, around 4000lbs. We were going to use it in multiple locations, so figured no ballast for a lighter transport. Well that lasted exactly 1 week, knowing what a benefit it was to have the tires filled and feeling that the tractor simply was not performing to is capabilities, I filled the tires, again all 4. Again, what an increase in the over all performance of the machine.
So while you are satisfied with the performance of your machine, it could be so much more.
Again, just my :2cents:, others will vary.
