What are the stock size rear tires on an adventure kit from motor trike? I pulled the wheels off mine and noticed a slight rub on the swaybar at the front and the rear rims have an aluminum spacer ring already installed to give it roughly another 1/4 to 5/16th inch offset. The rims are the stock aluminum rims.....only thing i can think of is that previous owner went up one size in tire and developed a rub issue (reason for the rim spacers).