I have a 28 ft. TT and had the wheels bearings completely serviced in 2019. I have used the trailer only twice since then for 2 trips of 400 miles total. I would like to make another trip of about eq...
I would be more concerned about the tire age. If they are ST series and near or beyond 5 years by date code; I would change them. If you are not familiar with it, the date code is a 4 digit number molded in the sidewall of the tire indicating the week and year and manufacture. The first two are week and second year ie a tire manufactured last week would show 3122.