If you tow then you think about what might happen overnight at the Motel 6 on New York Thruway.

Fulton Locks - FTK1000100
Made of heavy-duty, hardened steel, this wheel lock is adjustable to fit most trailer wheels up to and including 15". Includes brass lock and key set.
Features:
Prevents trailer theft
Has heavy-duty steel construction
Adjusts to fit most common wheel sizes
Includes brass lock and key set

Specs: Fits most wheels up to, and including 15"
TK1000100 Fulton Trailer Keeper Lock