Alot of iforged issues were involving water collecting where the center section/barrel meets the rim. Kind of hit or miss, but water collects in there, and then when at speed, it causes the wheels to vibrate. They developed some sort of block or piece to go in there and divert water out. I do believe the reverse drop eliminates the problem as well.
Audi sniper had them and he went nuts with the vibration problems in the rain. Called iforged and they said “Sorry sir, but most of our customers do not drive in the rain.” haha…
Nice quality, a PITA to keep clean, and primarily show wheels.