I have a 2016 Jay Flight 23RB, bought new, and after a 3000 mile trip we noticed one of the tires was wearing on the inside to the extent it was no longer safe. The axle manual says it could be caused by overloading (we are very careful about this), underinflation (we check pressure before leaving every day), or wheel alignment. I took the trailer into Bear alignment and $240 later was told the front axle was way out of alignment. We put the spare on, took another trip of 2800 miles and had no uneven wear. The thing that sticks in my craw is that the alignment should have been right from the factory, and I shouldn't have had to pay for it. It's been typical of quality problems on this trailer.