Remove SetRelativeLocation() and set DeltaRotation to a value of your liking and you’re golden. (You might also be able to plug in an array of your wheels without needing a loop into your nodes, just for some cleanup)
DeltaRotation is basically how much rotation gets added per tick. If you’re interested about the technical aspects, you can look up World Delta Seconds online. That might be sensible since otherwise your delta values will vary based on game FPS.