No, it is not strange, it identifies the type of problem source.
Not tyres, as this would be wheel speed related, not engine speed.
Within the rev range in question, you will find the natural frequency of the vibrating item, which then resonates.
A clue is the type of resonance - light or heavy. This is proportional to the mass of the item resonating.
E.g, for a light resonance, I would look for a loose metal cover below the fuel tanks, or if your car has a metal sump guard, check there.
For heavier resonance, exhaust touching somewhere or loose hanger bracket on the torsion bar, or engine mount with torn rubber. The top mount does the most work, so they go way before the bottom ones. Also check the drive shaft support bearing condition and attachment to the crossmember.
And then the A/C compressor. This is easy to check by turning it off.
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