Brad Keselowski hit out at the "atrocious angle" of the Indianapolis barrier that he hit in his massive NASCAR Cup crash.
Penske Ford driver Keselowski tangled with Joe Gibbs Racing's Erik Jones just before one-third distance in Sunday's race.
Both cars were sent into the outside wall at the exit of Turn 2 before Keselowski's then slid across the track.
The car ended up impacting a tyre barrier on the inside and coming to rest on its side. Both drivers walked away uninjured.
"There is this spot on the wall with just an atrocious angle," said Keselowski.
"I don't know what that spot is for but it does not need to be there.
"But we found it. That is how racing goes. We find the things.
"This track really was part of the safety revolution about 15-20 years ago and I think it is time for another."
Jones, who had taken his first win of the season a week earlier at Darlington, accepted responsibility for the Indianapolis collision.
"I just got loose and made a mistake," he said. "I didn't think he would be so tight on me and I just lost it.
"It's my fault. I feel bad for the #2 [Keselowski] and I feel bad for our team as well. It's a shame, we had a good [Toyota] Camry and I just hate seeing it come down like that.
"I just wasn't anticipating enough and I drove in too hard for it."
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But Keselowski felt he could also have given Jones more space.
"We had new tyres and we were racing some cars that didn't have new tyres and wanted to make the pass there and got real tight to the #48 [Jimmie Johnson] and lost the nose in the air," said Keselowski.
"I was trying to leave room and probably came down on Erik more than I thought I did and he got real loose."