My AV has the six stud wheels. My garage put the lugs on so tight that I Couldn't get them off with my wheel wrench. I have an impact but not the right size metric socket. Does anyone know if 21 or 22 mm sounds right or other. Thanks in advance for any help.

22 fits some.
But best to measure the nut for right size.
And select fit sockets to be sure for the right socket.
Good luck
MT

i've checked my brother's 2004 model

it's 21 mm & you're supposed to torque them down to 140 ft.lbs.

most newer vehicles are in metric sizes

best to get a 1/2" torque wrench and the proper socket to do the final tightening

and one of these would help speed up the process if you don't like air impact guns:

http://www.northerntool.com/images/product/images/135630_lg.jpg

as a matter of fact, reading the measurements on the X wrench:

it's 17mm, 19mm, 21mm, 23mm

you may be thinking it's a 22 mm but those black plastic covers are just fo decoration, yo