2013 Giulietta shaking at speed

[SammieJ]

Hi everyone, I've recently bought a 2013 Giulietta, can anyone help me, when driving up to 100km, car is fine, at 100km it feels like the car is a bit shaky, then over 100km it's fine. Does anyone know what this could be or anyone have this issue?

[Colin Edwards]

Front wheel balance?
Rear wheel balance?
Inside edge of front tyre featuring weird wear pattern?  High likelihood if its a QV and the tyres are 30K or more old.
Failed engine mount?

[SammieJ]

Unsure what it was, but have changed wheels to alloys now and it seems to have fixed it