Quote:
Originally posted by lj1983:
well i gotta remark, i never found that button on all the humvees and uparmoreds i drove...of course we managed to get them stuck every other time we went out, so we probably had alot of stuff we didn't know about..
Well, maybe yours didn't have it. I was under the impression all Humvees had it, but it turns out that not all do...

This unique configuration of components along with military 37x12.5 radial tires with low-profile runflat devices allows the HMMWV to go places that no other wheeled vehicle in U.S. or foreign military service could go. Some HMMWVs are equipped with an optional central tire inflation system (CTIS). This enables the operator to adjust tire pressure from the driver's seat "on the move," to adapt to changing terrain conditions for greater off-road mobility.

The full story is at this link.