Brandy McDonnell Today's featured event: Check out the high-powered action of Monster Jam at 1 p.m. today at Chesapeake Energy Arena, 100 W Reno. Gates open at noon. The event will feature eight trucks and drivers vying to be the Oklahoma City champion Approximately 12 feet tall and about 12 feet wide, Monster Jam trucks are custom-designed machines that sit atop 66-inch-tall tires and weigh a minimum of 10,000 pounds.