Have you considered buying tires with some tread on them? It's highly unlikely that every big rig that's ever been produced in the past 75 years or more would have been able to haul untold millions of tons of cargo if all of them really needed a locker to get the job done!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!