PeoriaKen,
May I ask, what "Type" of wheels do you have? Are they steel with Stainless steel wheel liners or, are they "Aluminum"? If, they're Aluminum, it's possible that, (like ours) there is a stamped number on the lug nut caps, (that is if you have caps). On mine there is a "33" on them. That is, mine are 33 mm lug nuts. The same, or very, very close in American sockets is a 1 5/16". This is assuming that because you have 22.5" wheels, your lugs will be the same as ours. Just guessing here.
Scott
P.S. Use a tape measure and measure across the stud, from a flat surface on one side to the exact opposite on the other side of the lug nut and see what you get.
Scott
Scott and Karla SDFD RETIRED2004 Itasca Horizon, 36GD Slate Blue 330 CAT
2011 GMC Sierra 1500 Ext Cab 4x4 Toad
2008 Caliente Red LVL II GL 1800 Goldwing KI60ND