Trucker question ...tire related

Well the big trucks have fallen victim to the smog patrol with EGR, converter, and all that stuff. If you ever can catch a new one idling it will sound like a jet engine winding up. They finally took the fun out of trucking! You want turbo sound? drive an old Mack with the twin turbo's! one small turbo feeds the bigger one! Maybe called a tip turbine??? not sure! very cool sound when you put your foot in it. People will get out of your way!!!!