We just shared this on Twitter/X.
This is what's going on - a bit more info for y'all:
With the release of v2.40, every player that logs into Rocket League will see a Base version of the Nissan Fairlady Z Wheel appear in their inventory. In a future hotfix, we will update the rarity of the Wheel to Limited, and Base duplicates will be removed from player inventories. Anyone who logs into Rocket League between now and the hotfix will keep the Limited Nissan Fairlady Z Wheel, whether you have Rocket Pass Premium or not.