I was able to find out some information.
The front roof rack is 45.6" wide for the bar and outside to outside is about 53".
The rear roof rack is 42,5" for the bar and about 49" outside to outside.
They are about 36" apart.
This uses data from both the Tesla version and the Tesery version. They appear very similar from the web sites.
I hope this helps! In my case, with the larger kayak 16' long (a few incheslonger than the car) and 83 pounds, I think carrying it on the rack would be marginal. Perhaps if I add a hitch and hitch-mounted support for the boat.