They Mb would then need to have that work checked and verified to then inform the insurance that a mod had been done and had been done legally to cover themselves for the liabilty against them as they own the car and thus will not give permission..
One couuld have remapping done to get more bhp than standard. A lounder exhaust etc etc..
Point is it’s a lease car and it’s under their terms not ours.. if i agree with you or don’t matter 1 bit.
The important thing is it’s those terms that matter and i have heard of car ppl who bought cars on hp who modded them did youtube vids on them, having the finance agreement terminated and having to pay for the car outright or it will be repo’d. why because they don’t own it till it’s all paid off..
I do get what you say i do, in you case it’s only speakers and they not gonna effect the driving of the car one bit but if they agree to one thing then they discriminate.. So they blanket say no to mods..