Are you going to drive to the event, or trailer the truck? I don't think I'd trust tires that old to run very far, especially in the summertime temperatures most of us are experiencing right now. If you're just unloading/reloading on a trailer, or making a SHORT low-speed run to the show, go for it. Just don't bet your life on those tires at highway speed.
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!