I would agree; nothing wrong with the Kirban wheel however I think the GTA has better definition and a better pattern. I also don't have a clue with regard to the validation process Kirban went through; I'll assume as a trusted vendor they met or exceeded the FMVSS process. Having said that as a former GM employee I do know GM has rigorous validation procedures for wheels and tires. These GTA's will perform as GM design/engineering expects. Nothing beats OEM quality for wheels...