Indeed, it's best to first verify the swingarm bolt is properly tightened.
However, you should always inspect the wheel bearings, and grease the bushings as well.
In case you are not familiar with replacing wheel bearings, you might enjoy reading the following thread.
http://www.chinariders.net/showthread.php?t=16320
__________________
Spud
"Never argue with an idiot. He will drag you down to his level, and beat you with experience."
Mark Twain
2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220
Mods made to my Zongshen ZS200GY-2:
http://www.chinariders.net/showthread.php?t=6894