When I read nearby Janesville Wisconsin Police had a Zero for patrol - I wondered about ambling down there for a "Zero Pulls over Zero" PR stunt.
I figured the most suitable "charge" would be a violation of 347.3486(3).
Wisconsin Statutes 347.486  General requirements.
347.486(3) No person may operate a motorcycle without a functioning muffler.
305.39 Exhaust system.
(1) Every motorcycle shall be equipped with a functioning exhaust system that is maintained in proper working condition so as to reduce engine noise. The exhaust system shall be maintained in conformity with this section and s. 347.39, Stats.
But now I'm thinking I should probably write my legislature.
Any others?