MadMax said:
most wheeled armored vehicles alow the driver to change the tire pressure for better traction on sand, snow,mud ext. and the tires can be filled with a matirial that will fill bullet and fragment holes and the tire pressure will reinflate them to the pressure you were at before
well, i know that, we use those "Run-flat" tires on our LAV-III (original version of the LAV-25) it's not efficient, i'm honest. And i was not talking about traction on sand, snow, mud but pression distribute by the wheel, tracks distribute a vehicle's weight evenly over the surface. This enables deep, soft sand to be traversed with ease, in areas that a wheeled vehicle would find impassable. With tires, the weight "stay" at the same place, so if the front of your armored vehicule is heavier for exemple, they'll be more pression on the front wheel.
(Picutre) With a tow cable attached to its front end, an eight-wheeled USMC LAV-25 is pulled from the Croatian mud where it had been hopelessly mired. Note the nose up angle, indicating that each pair of tires has dug deeper into the mud than the preceding pair. And BTW, you need chains to drive on snows. And wheeled vehicule cannot climb obstacle, that's a BIG problem.