There have been a number of discussions of TPMS on the Oliver Forum. In addition to the one Mike and Carol mentioned, there are threads here and here. Coy (@hardrock) posted providing info on a web site that compares the features of different systems, and this was quite useful to me. I then found other product comparisons at motorhome.com and trailerlife.com.
After my research I got the EEZTire Tire Pressure Monitoring System - 4 Sensors at $269. Excellent reviews, and good features. While there are some systems that use sensors that are internal to the tire, I got a system with external sensors. There are some sensors that are flow thru, meaning they do not need to be removed before using a tire pressure gauge or adding air. I got the version with the non flow thru sensors, which are easy enough to remove, but have an anti-theft feature. I also liked the fact that these EEZTire sensors are light enough that the tire does not need to be re-balanced. (As it turned out, I put the sensors on before I finally got the tires balanced.) I found it easy to use, especially with good how-to videos (
and
) that showed how to program the system and link the individual sensors. The video had several good ideas, including putting clear nail polish over the number tags that identify each sensor, and using Anti-Seize Lubricant when attaching the sensors.
I urge everyone to get a TPMS system, as this provides an important margin for safety while towing. I expect all of the TPMS products work well, so don't delay. Choose a system and get it installed.