This sounds more like what I was thinking...
"Torquing
Lug nut torquing is expressed in foot-pounds. Use torque sticks with an air gun or a torque wrench to get the correct torque. If your studs or lug nuts are sized between 12 X 1.25mm to 1.5mm or are 7/16-inch, torque the nuts to 70 to 80 foot-lbs; 14 X 1.25mm to 1.5mm, to 85 or 90; 1/2=inch 75 to 85; and 9/16-inch 135 to 145.
Read more :
http://www.ehow.com/facts_7356894_pr...heel-nuts.html
It is based on the bolt size. Too much torque and you will snap the bolt right off...
But, yes, we need to consult a manufacturer spec.
I also found this document that explains recommended torque for trailer wheels...
http://www.ace-trailers.com/Tires%20&%20Wheels.pdf
Going by it, 80-90 is the maximum.
Of course, getting them all about the the same is probably as important...
BTW, I also found a site that has the Cruiser RV specific aluminum wheels:
http://www.nueratrailerparts.com/p-1...k-accents.aspx