[ken6x6]

tires are usually filled with calcium or basically salt water. they fill the tires with a pump and are usually filled 3/4. loaded tires as i call em have both pros and cons. i personally have 3 machines with loaded tires. (1 cub, a ford 800 and a case 580 backhoe. it gives the tractors some nice weight. but you have to watch out for the valve stem holes rotting. i prefer loaded tires over wheel weights. wheel weights can stick out from the sides, requires removing the weights if you have to pull a wheel and wheel weight look ugly to me.