The key words Capt. Bill said about driving on pavement with low pressure tires is TAKE IT EASY. I would not recommend doing this as a matter of course. Your vehicle will not react as you expect if you need to make an "abrupt manuver" as my sunvisor warning says. I have done so from time to time, to move from one beach acess to another. But it has some danger and your tires will wear funny. Check out http://www.4by4connection.com/arbaircom.html
These are not the toy compressors that whine for 20 minutes then do a smoke bomb imitation when your 31" tire finally gets to 28 psi. You can tell these are serious by the prices. After going through 4 of the $30 ones I realized it is a false economy. Admittedly, I did not buy one of the ones on that web site. I found one at a garage sale in new condition. If you get a good one, you won't find yourself saying "Oh I'm not going that far down the beach today. I think I'll just not air down this time" Mistake.
These are not the toy compressors that whine for 20 minutes then do a smoke bomb imitation when your 31" tire finally gets to 28 psi. You can tell these are serious by the prices. After going through 4 of the $30 ones I realized it is a false economy. Admittedly, I did not buy one of the ones on that web site. I found one at a garage sale in new condition. If you get a good one, you won't find yourself saying "Oh I'm not going that far down the beach today. I think I'll just not air down this time" Mistake.