I put a u haul roof rack on my barracuda. Was packed and heavy. The rack itself didn't cause any damage. I was careful hooking it on the drip rails.

The weight I put in it and absolutely stuff in every corner inside the car did cause it to bottom out and break a k-member LCA hole. I don't run LCA bumpers as my car is too lowered for them. i should have raised the front ride height. Although I did add air shocks pumped up to the max.

All that on the ground was in the car top carrier. Including the 4 rims, Kirby vacuum cleaner, metal billboard, etc. etc.