I had a Yakima roof rack on my old car. Sold it when I sold the car.
I had two Steelhead trays for hauling two bikes (front wheels removed).

Never had any problems with the bikes or the rack, even at 75 mph on the highway. And I never crunched the bike. The bike cleared the carport roof by at least 6" so I could mount and unmount the bike while under the carport.