I think you're best bet is to go for a ride in another ED30, if you know anyone nearby, and compare. Where do you live ?
IMO all GTi' & ED30 have this trait to some extent - hence all the numerous comments on rattles and vibrations within the cabin.
I have Michelin Exaltos on my ED30 and run them at 33psi front and 31psi back, much less than VW advise but about the same as what Michelin advise. I hav'nt experienced any worse vibration than my previous GTi which ran on on Conti Sports, in fact I was pleasantly surprised with the comfort & ride quality after hopping straight from my old GTi to the new ED30 last October.
You could try dropping your pressures a bit and see if this helps. Other things to try are swapping your wheels round, front to rear, to see if you have a rogue wheel /unbalanced tyre at the front.