I had one tire wearing. The other side of the axle was not wearing. Took to dealer, and discovered that when Lippert came and fixed a factory problem, they only corrected one axle. Both had been installed wrong by Lippert. They sent a factory man out to take care of a number of thrillers they had installed wrong on. After about 2 years later we discover that they chose not to finish the job. They refused to help with repairs. At least I had extended warranty, and they paid part to it. Dealer did repairs in house. One of many reasons I don't buy 5ths with Lippert frames.