Many of the wheels have their pivot at the bottom, this means you can't rotate them without first editing the imported model and putting the wheels under an empty parent.
I haven't gone through all the wheels.
Example is from Trains -> wheel_medium.
A member registered Jul 24, 2014 · View creator page →
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A pack of 41 vehicles for Unity
A simple, fun feeling, rotorcraft controller for Unity.
A simple, fun feeling, rotorcraft controller for Unity.
A simple, fun feeling, vehicle controller for Unity.
A simple, fun feeling, vehicle controller for Unity.
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Asset Forge community » Meta » Bug reports · Created a new topic Pivot in incorrect position for many of the wheels