It is called building and managing the relationship. It is as much on the owner of the car as it is the dealership.
You'd like to think that, but, it doesn't work out that way. I am very "Mod Friendly" my whole carrer as a dealership technician, service manager and now service advisor, but, any dealeships position will be "Not Really" they cannot singlehandedly take on liabilities that the manufacterer has chosen not to and
WILL hold that dealership and individual
PERSONALLY responsible for such actions.
I know this first hand as nearly all of my cars have been modified, I have built 3 race cars in the dealership where I was working, 2 cars even had factory sponsorship and still the factory's position never budged.
Add that to the
fact that the moment a customer gets in trouble for such mods, guess who he gives up(been there, done that...hated it)?
So, no...it ain't happenin'...