Change one, or both.

[mowin]

Sliced a front tire(R4) on my JD 3320. There's only 300 hrs on the tractor. New tire isn't the same brand as the original. Just wondering if I should change the other tire so they match. Worried about the 4x4 if one tire is a little taller than the other, or is that not going to matter.

 

[KennyG]

That's why you have a differential. Don't worry about it. At 500 hours I punctured a sidewall on one front tire and had to replace it. Now, at 1000 hours, you can still see the difference in wear, but no ill effects.