How many miles do you tow?
Bearings should be good for at least 15K miles if well packed?
Use a infrared Temp gun to check Hub temps at most stops to see if a wheel is running Hot.
Several years ago I lost just one wheel bearing and Tire, Wheel and most of the Brake just once after about 15K miles since last repack - ALL the other 3 Wheel bearings were checked and repacked/replaced by myself after that BUT the others were all actually fine...
Also messed up the side skirting and destroyed the plastic fender.
This is on a 2005 Montana that we tow about 2-5K miles per year.
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