There are people who will never spend the money and if they are lucky will go through all their driving without a problem. Then there are the rest of us, who learned through some real world experience that a failed tire is expensive, costs time and in many cases causes extensive damage to the rig. Also it never fails but the tire will give out along the busiest and most dangerous highway on your trip. It is NEVER safe to change a damaged tire on the highway. The tire monitor systems now tell not only what the tire pressures are but also the temperatures and will give warning signals before the tire fails from low pressures or high heat. I use the TST system and have found the company excellent to work with. Give them a call and see what they have to say. I see they have now a 3 year warranty.