Forged or cast aluminum wheels?

Hi.....I was just wondering which type of aluminum wheels Heartland uses on their fifth wheels? We all know that forged wheels are better than cast (china). Also, is Heartland using rubber or metal valve stems on these rigs? thanks

I haven't checked to see if the wheelsa are forged or cast. However, my valve stems are a hybrid. Upper part is metal, but where they attach to the wheel is rubber.