Tire size advice needed

[hondo964]

I was looking at a JD 5225 and it had rear ag tires that are 13.6-28 on a 12 inch rim. They were shorter and considerably narrower than a tractor that was 10 Hp larger (JD 5303). These were 16.9-28. I was surprised to see that difference.

Can anyone help me understand what the implications of these Shorter and Narrower tires would be in operating the tractor?

 

[deere5105]

Not sure what information specifically you are looking for, but in my opinion you see the larger wider tires standard on the higher horsepower tractors in most line ups. I have 14.9-28 tires on my 2WD 5105 and have driven a neighbors 2WD 5205 with 16.9-28 tires and the 16.9 tires seem to substantially improve the traction. These two tractors are the same size and set up the same. The 5205 has a few more horsepower, I think 6 at the motor and 4 at the PTO. The other side too is that the larger tire holds more fluid for ballast which also helps. I personally would go with the biggest tire I could for my needs and use.