Wanting to record trailer mileage is the dumbest thing I've ever heard. I've been pulling all kinds of trailers for 55 years. I've owned five bumper pull travel trailers and a 35 foot fifth wheel since 1980 and have pulled all over the U.S . I service the brakes and bearings on trailers using common sense and estimation on time and miles of trips. If you are set on needing to know trailer mileage just do it the old fashioned way and when you pull your boat set the trip counter to zero on your truck and record the mileage after your trip in a log book kept in your glove box. Not complicated!!
