I LOVE tire chains....if your vehical cant use them for lack of clearence try tire cables. You can also clip along pretty fast with the cables vs. chains. Keep in mind the chains/cable work wonders in snow OR mud. Also, try Gempler's for a tire "Slime" that can self seal holes in tires
http://www.gemplers.com/product/G65511/GEMPLERS-Ultraseal-Tire-Sealant-1-gal-Bulletproof-Grade. Also keep in mind that you will need AIR to fill the tires, think CO2 or the like container with 3000 psi of gas (non combusable)and retro fit a regulator and air hose to it. Many local fire depts have old tanks they dispose of. Re-cert them and if needed put a new valve on them for your gas(es) of choice. Wool blankets are great for smothering vehical fires and anything else engulfed. No so user friendly for "soft" in keeping you warm, but certainly multi purpose.
My BOV, for family of 5 and food/water, fuel for 3000 mi. un-aided is a Ford diesel 4 door dually. BIG ineffiecent, but if I am bugging it will be to "outrun" a cloud of something NBC (Nuclear, Biological, Chemical)and I know about bottle necks, bridges, main routes, etc... but I dont want to HAVE to stop if all is clear. You cant really stockpile gasoline today with the ethynol, so diesel for me. Generally I am hardening here for Bug-In. But just in case.......
Ironwood