'04 Tahoe towing a 10 ft covered not heavily loaded 2 wheel trailer on interstate routes. Am looking for a add on TPMS system for the trailer tires for safety. Yes, I know there are some for $50-$450 at RV sales places and online. Which one do some of you use or recommend ? Am about to get new trailer tires before the next outing. Have been using Carlisle brand tires several times. Is there one that is better ? Any suggestions. Thanks. *BW*