Tires will not deform like that, even when they are flat. Also, the 'caging' in tires is really dense. If you want tires to look old, wear down the tiretreads so you can just see the steel mesh underneath, and slightly downscale them in X-axis (as they are probably deflated, it sits a little loose from the rim).
rickyss - hehe yeah MG42 the car and various other weapons, hehe
NightEye - I see so most of the tyre remains in its shape, wondering what effect a cut would have on it, would it deform in that area, seeming as the strength of an arched cable would be lost if it were split
Kinda depends on the type of cut, I think A hole doesn't do anything to the tire's shape, you can even let that be filled in again. But if you cut with a knife through a large section of the sidewall, the structure is disrupted and thus it will deform. How it will deform, that's hard to tell.. Probably like this