We road tested a new 18 G4 CVT recently I did a comparison in a previous post with the alloy 15's options and noticed much more road noise then with Dott or Dolores 17 hatches with 14 Steels Ecoslaves. I was able to drive a G4 with the base steel wheels (ecos) and road noise diminshed maybe slightly quieter then Dott and Dolores.

We are thinking of the new G4 but I would spend a lot of time in it with multiple family members. I was thinking on the entire test drive the road noise in combination with family over time would get to me. The family is still considering the G4 but now it would be the 14 tires.