P38A Vibration through floor

Hi,
My P38 vibrates through the floor around 70-90. The car hit a curb at quite high speed a while ago which popped a tyre and ever since then it's vibrated. It seems to be worst at 80. The vibration doesn't come through the steering wheel just through the floor. I've changed the props with new ones but that didn't make any difference. I've also had the wheels balanced and tried another set of wheels I have but neither of them made any difference also.

Any ideas what I should look for next?

Jack

Tracking ?
General check of geometry of suspension and wheels.....

Quick reply! Sorry I forgot to mention yes I did get the tracking checked at the same time the wheels were balanced.

Bent disk rotor?

Would that not only appear under braking?

If it was bent it would occur all the time the wheels were turning..

Out of curiosity, does it vibrate only when accelerating? Or does it vibrate even if you coast at 70-90?

have you checked the wheel bearing?