6x12 Tandem vs 6x14 Tandem?

[Little Red Tractor]

For what it's worth, I "over-bought" on the trailer I have, now I have bigger toys and wish I had a bigger trailer. And so it goes, I'm afraid.

 

[mini14]

I went from an 8x12 to an 8.5x14 like it much better but eats tires much faster