For your 2016 Maserati Ghibli, we have the SeaSucker Monkey Bars Roof Rack - Vacuum Cup Mount - 48" Long # 298-SX6000B.
The SeaSucker Monkey Bars use vacuum cup mounts, which are each rated for 210 lbs pull strength, so it's surprisingly sturdy. I actually got the chance to install this rack on a different vehicle, so I can tell you first hand that this rack is a breeze to install and remove. It requires zero drilling into your vehicle's roof, like you wanted. You can check out my full... view full answer...