Many people may mistakenly believe that the force point of the roof tent is on the surface of the roof panel, worrying that it will be pressed out of a big pit, but in fact the main four force points of the roof are pressed on the car frame, here is the car The hardest part of the material is used, so don't worry about the possibility of being crushed at this point.
Also, your crossbars need to have a dynamic weight rating of at least 120 lbs to 150 lbs. The weight of the tent and the people sleep inside totally will be 4 times of the dynamic weight rating, we prefer using a pair of HEAVY DUTY through crossbars, with width over 2'', it will help a lot.
Some new vehicles like Tesla 3, Tesla S, the 2 crossbars will be as close as 37'', we normally recommend over 40'' is better, but, does Tesla can not install RTT, the answer is NO.
We updated our bottom frame, with more cross support, this disadvantage was solved.
The best way is to check your loading capacity is the first step, then chose the right RTT for your lovely car!