I was wondering if it is worth the investment for the tire pressure/temperature monitoring system. I have friend that got one for his TT after having a flat last year. As he stated if he had had some warning the tire was going low he could have maybe had a chance to pull off in a different spot to change the tire. Has anyone had any experience with the monitoring system? I could see where this could be helpful on a long trip, but not sure it is worth the money.