for a 19x 9.5 rear I would reccommend a ET of 33. for a none M that would sit almost perfectly flush with the fender. This is a good look for the car. Maybe even use 245 tyres to stretch em a bit.
Any more stretching or protruding outside wont look too nice in my opinion unless you are driving a jap car.
My question is, what is a flush look for the front 19x8.5 ET 35? or ET 38?
I think the mot states its allowed to protrude upto 5mm at its furthest from the bodywork.... Which in this case would be the lower part of the wheel arch, but that still wouldnt be a fail.
I dont fancy getting involved in any of the other shenanigans on this post but i have 19x9.5 et 23 rear and 19x8.5 et29 front m3 wheels and before lowering the car they obviously looked simmilar to the above picture. After lowerring it was better no camber adjustment involved
I have 10mm spacers on the front
I have had to roll the rear arches and the front rubes on the plastic by the wheel arch. So just bare that in mind.