I was at the race. IMO, the compound was too hard. It just ground the tire off and left black dust. People in the corners looked like chimney sweeps when it was over. A softer compound would have rubbered the track in better. I think Good Year just guessed on the tire based on needing to run harder compounds on the COT at other tracks.
I think they are going to have to do some design changes on the car. They are safe it would seem, but they are boring as all get out to watch and create too much right side loading to keep tires under it. Maybe wider right side tires would help.
Someone made the comment yesterday that it was like going to a dirt track with all the powder flying.