unkamonkey
Explorer
There is an easier way, if your carrying a tow strap or chain. I'll repost a link to a YouTube video on removing a rock stuck between dual wheels.
http://youtu.be/DFs7fiYXSzQ
I considered the chain/strap fix but given some clearence issues from the storage box and holding tanks and without something to hook to on the side of the road I was on, the hammer way worked albeit some damage to my hand from the bottom of the storage box. I'm just happy the rock didn't fly out and take out the holding tank behind it or the wheelwell above. I took out the wheelwell on the other side when a tread decided to come off at highway speed.