Actually they said the Challenger wheels are the lightest.I'm going to take a wild guess at about 45 pounds per wheel, whatever it actually is, you will not find too many 20s that are lighter. The wheels that are lighter are pretty expensive I bet. The SRT engineers said the 300 SRT8s have the lightest wheels of all the SRT8, about 5 pounds less per rim versus the others. Good luck,
Tirerack.com says the Goodyears weight 29 lbs each.I weighed my SuperBee wheels (brushed face with black pockets) wrapped in 245/45R20 F1's before shipping them to IL, and they were a touch under 62lbs each.