Potential disadvantage to foaming a two wheel tractor?

[freedomlives]

I'm a week away from the adapter I need being finished to get the Nibbi brand brush mower to fit on one of my Goldonis. Yesterday I went in to the field with all the Prunus spinosa (Blackthorn) which not only pierced again one of the mower's tires, but also took out the inner tube, through the "6-ply rating", Golden Rabbit Brand, (doubtless highest quality from China) front tire on my four wheel Iseki.

The weight for tractor tires would obviously be huge, as would probably the investment, but I'm inclined to get the tires on the now 3 different machines for mowing filled. Two of the machines are relatively small tires-- 13x5.00-6 and 4.00-8-- but the larger Goldoni which is going to drive the brush mower is 6.5/80-12 and I particularly wonder, as I use it for rotary plowing, rototilling, etc. whether it is going to be a help or hindrance to have that weight on top of the already ~400 lbs of the machine?

 

[LouNY]

The only foam filled tires I had any experience with were several years ago;
they did not go flat,
they did lose a lot of traction and the ride was terrible as they lost all flexibility.