TPMS. Necessary or just peace of mind?

After 8 years of weighing RV's by the wheel position and checking tire pressures before weighing the amount of folks that might say they check their tires before every trip are not necessarily telling the whole truth. At one rally where I weighed 57 rigs, 45 had at least 1 tire grossly under inflated. Some of these folks said they checked their tires just a couple of days ago, but that might have been 1,000 miles. Some said they just look at the tire and can tell how they are, some said they thump them. One fellow picked up a nail from where my scales were to the site in the rv park, a distance of 300 feet. Within 4 hours he had a flat. Will a TPMS save everyone a blow out or flat, no, but it sure does make checking tire pressures so much easier from the drivers seat. The damage resulting in a tire failure can be very expensive and take many days if not weeks to repair. One rig we weighed told us of his tire blow out, causing extensive damage to the floor right above the tire, where the refrigerator was, until it fell through the hole and partially out of the trailer. There are all kinds of scary stories from RV'ers of the damages and emotional stress involved when a tire lets go or fails. For the most part these failures occur on the side of the road and that is not a place most of us care to be. For the costs involved in owning a piece of equipment that 'could' make you have a trouble free trip, why not? No one is twisting your arm to spend money you care not to spend, but for a lot of folks they see some advantage and choose to make life a bit easier and maybe safer. I have the TST system and when the time comes to replace it I will own another TST system.