Hello all.I have a b6200 4x4 ag tires.what is on them now is8.3 16 rears front are brand new.what happens when you want to go wider?like 9.5 16 or even 11.2 16
As NIW mentioned - you mess with the tire sizes the ratio to 4wd gets out of whack - which will damage the internal gearing.
What you need to do is simply measure the rolling distance of both front end and back end tires.
Some take a sharpie - mark a line on the tire at the six o'clock position and roll the tractor ONE rotation and simply measure the distance on the ground that it traveled. Obviously - do this in a straight line and on a level hard surface. Once you have distance "X" for the front and distance "Y" for the rear - you now have a ration between the two. SO if you change the rears and the rolling distance changes (and it will) then the front tires will need to change in diameter to match back up to the calculated ratio.
IF you were to take the tire off and measure - this will be the circumference - but not necessarily the rolling distance since the tire actually flattens a bit when weight is applied.
The ol rule of thumb is that you want to be within 2% - and if any error - the front pulls the rear a bit