Did you balance your tires when you first got your unit? Trailer tires all need balancing ,Don't be fooled ,they are all made in china. One of mine was way out of balance and needed alot of weights
could be your problem .
It was a rainy few days at Algonquin Prov park...tarps kept us dry.
Wayne --Belle River (Windsor), Ontario
2013 Sunset Trail Reserve 25RB..
2015 White Chev Silverado 2500HD 4x4 (6.0 l gasser)
2003 Mountain Star 890SBRX Truck Camper