yeah, just throwin' that misfire thing out as a thought, but it's good and smooth everywhere except that mph range... hmmm. engine mounts... hadn't thought of that... makes sense though. I'll check that out too.

 

I have a very similar problem too, i was thinking either something in steering, maybe tie rods. I was maybe thinking something in the transmission, I have a wide issue where sometimes it will try to down shift but it won't and it will jerk between gears and eventually gear down. My guess is on steering though.

 

hi check your rear alloy whell after drive if is hot handbrake issue
i dont know why so vybration but replace shoes and clean no more vybration

 

I'd say definitely check the engine mounts and Universal joint on rear driveshaft.

 

On throttle vibration is a classic symptom of a bad axle / half shaft.