Kubota Mx5400 tires

[Pat mx5400]

I just bought a new kubota mx54000 with cab.
I have the r4 tires on it, it leaves drag mark on rear end when on 4x4, all good on 2wd I have Carlisle tire at front and Firestone at rear, is it normal?
That is my 4th kubota and never had drag marks on 4x4 with my other ones.
Just wondering if dealer put wrong tires on when loading it.
Thanks

 

[RickB]

Without posting your tire sizes there's no way to know.

 

[jeff9366]

If you have an 800 pound cab + 700 pounds loaded rear tires you have a lot of weight on the rear end.

Mount an implement on the Three Point Hitch and weight on the rear tires increases.

 

[mcfarmall]

Educate me...what are "drag marks"?