have a 2015 300c with the 20 in. wheels thinking about wheel locks not sure what to get any one have 20 in. wheels with locks.

 

Kind of a late response but since no one answered I will.

Bill, I use Gorilla locks and buy them by the set (usually 20 lugs and all are locks) if I need to protect wheels which I have done recently with the hyper black honeycomb style wheels on the 2016 300s. And do yourself a favor, don't throw the lock for the lugs in the glovebox, kinda defeats the whole purpose of having a lock when you leave it sitting on the hood for the thieves to use while removing your wheels.