Law says:
Sec. 548.255. ATTACHMENT OR PRODUCTION OF INSPECTION CERTIFICATE. (a) An inspection certificate shall be attached to or produced for a vehicle in the manner required by department rule.
(b) The department shall:
(1) require that a certificate for a motorcycle be attached to the rear of the motorcycle near the license plate; and
(2) adopt rules with respect to display of an inspection certificate for a moped.
So, how far is "near the license plate"? I also see no reference to facing the sticker to the rear.
Mine is on the driveshaft tube. You have to be in front of the left saddelbag to see it. That has not been an issue ... yet.