I have an aluminum 3 axle 13500 lb rated trailer with ss disk brakes. In the past, I had a master cylinder solenoid malfunction which appear to have caused premature brake failure. Although, it was supposed to have diverted brake fluid back to master cylinder's reservoir, it wouldn't. Thus, my granny low gear in my 4x4 appears to have eaten up brakes while in reverse. My Chevy v8's low gear overcame any grip on disk and destroyed brakes and disks. Manufacture warranted both brakes and solenoid. As most know, trailer disk brakes must have a manual or electric switch to divert brake fluid, if backing up. I have both switches now and they both work. However, my right front rim's lugs keep getting slightly loose. I have had to retighten only that tire's lugs on the last two trips. Two lugs out of six on the tire had to be retightened. So far, only a couple of lugs. I don't have a clue why this is happening. They are torque to about 90+ lbs. Any clues????
