1981 Honda CB750F Supersport Tire problems/help
 

I am having a problem with tires for my honda. I want to put on 90% dirt and 10% road tires but only have the option to put a rear tire on the front, but may need to rig something up to make the tires stay in place rather then rotating with the rim, the rim is not a spoked rim. Any help or suggestions would help. Getting prepared for a south america trip in september. any ideas?