Radlauf Lack vs. Design

I fear that the underthread is not perfect, but the subject of paint fits definitely. Caddy 2k, front wheel runs repainted last year because of rust. Has only kept short since on salty winter road daily strutsplit etc. the wheel runs masakreieren. Am now just before with simply completely new fender parts to order. Of course not after a few months to get the paint protection layer again by heavy stone strike and have rusty wheel runs again… Therefore two questions: 1) Why are so many manufacturers so crazy to install blank paint there, where clearly stone strike takes place with the greatest possible force? What should the sh…. This can only be the attempt to have worry with the car as quickly as possible?! 2) If I mont new sheets, what could I grow there (artic strips etc.) to have a solid protection against stone strike? Most of the resters change the optics at the bottom of the parts to protect against stone strike. 3) I hate so stupid constructions. I don’t care about the tire area, but the new manufacturer.