When I recently walked the Kubota lot with a sales guy, he commented on several Kubota tractors on the lot having, what he thought, were the wrong tires. He was just commenting from personal experience. It wasn't a comment so much on the tire as it was on the pairing.
What I got from that was a simple reality. They have a lot of different tires sitting on the lot that are easily interchanged. They had a Grand L 3130 with turf tires, another Grand L 3130 w/ AGS, and another Grand L 3130 with R4's [all parked in the lot].
I believe that the
L3130,
L3430, and the
L3830 all share the same front tire size. The
L3130 and the
L3430 share the same rear tire size.
The
L3830,
L4330, and the
L4630 all share the same rear tire size. The L4330and the
L4630 share the same tire size on both the front and the rear.
If I have read this brochure correctly and these shared tire sizes do exist, I would simply ask that they swap R4's from another tractor on the lot. I wouldn't pay for the swap. That's in-house inventory. I'm not asking them to special order or buy something just for me. They can keep swaping tires around the lot until there are no more tire swaps that can be made, or it all works out where every buyer gets the exact tire design that they want.
I have done the exact same thing with new car purchases. I saw that there were several tire options on the lot. I wanted a specific tire. I had them swap out tires from another car parked on the lot. It was no biggie for them, but it was for me.
We're talking about a $545 tire swap on the actual dealer lot between display models that are available; it's not a special order. That's about 3% of an $18,000 sale item.
If the dealer is willing to argue a 3% tire swap, that dealer is not one that I care to deal with when the *real* issues involving warranty and non warranty repairs start surfacing down the road.
Just my opinion ...
The Gardener