Dont know about the other years but my 08 610 didnt come with any rimlocks. Are you guys adding them? I'm not too concerned with the street pressure that I run but when I hit the trails I want to air down to my normal 12psi and that makes me nervous.
Good question- never ran w/o one...on the track when in the air you can really feel the wa-wa-wa-wa-wa imbalance... I'm gonna try w/o one on an upcoming tire change....for track only.
Yeh- kinda thought about a 'counter balance' or some stick on weights...or nothing at all since if I flat the truck is right there.